Color material dispersion liquid, coloring resin composition, color filter, liquid crystal display device, and light-emitting display device

ABSTRACT

A color material dispersion liquid including a color material, a dispersant and a solvent, wherein the color material contains a compound which is represented by the following general formula (I) and which contains one or more structures selected from the following structures (i) and (ii); wherein (i) “A” is an aliphatic hydrocarbon group containing two or more alicyclic hydrocarbon groups, containing a saturated aliphatic hydrocarbon group at a terminal position directly bound to “N”, and optionally containing O, S, N in a carbon chain, and (ii) at least one of R 2  to R 5  is a cycloalkyl group optionally containing a substituent group or an aryl group optionally containing a substituent group.

TECHNICAL FIELD

The disclosure relates to a color material dispersion liquid, a colorresin composition, a color filter, a liquid crystal display device, anda light-emitting display device.

BACKGROUND ART

A color filter is used in liquid crystal display devices andlight-emitting display devices. For example, in the case of color LCDs,the amount of light is controlled by using a backlight as the lightsource and electrically driving the liquid crystal. The light passesthrough the color filter and represents colors. In light-emittingdisplay devices, a color image is formed in the same manner as liquidcrystal display devices, when the color filter is used in combinationwith a white light emitting element.

A recent trend is that there is a demand for power-saving image displaydevices. To increase backlight use efficiency, there is a very highdemand for high-luminance color filters. This is a major issueespecially for mobile displays (such as mobile phones, smart phones andtablet PCs).

In general, a color filter includes a transparent substrate, colorlayers made of color patterns of the three primary colors (red, greenand blue), and a light shielding part formed on the transparentsubstrate so as to define each color pattern.

In color filter production, since the color layers are exposed tovarious kinds of conditions such as heating and UV irradiation, pigmentswith excellent resistance properties (such as heat resistance and lightresistance) are used as color materials incorporated in color layers.However, it is difficult for color filters produced by use of pigmentsto satisfy the demand for higher luminance.

As a means to achieve higher luminance, dye-containing color resincompositions for color filters have been studied. In general, dyes havehigher transmittance and can produce higher-luminance color filters thanpigments. However, dyes have a problem in that the chromaticity islikely to change in a color filter production process.

As a method for forming a color layer excellent in solvent resistanceand electric reliability, the inventors of the present disclosuredisclosed a color resin composition for color filters, the compositioncomprising a specific color material having two or more dye skeletons(for example, see Patent Literature 1).

CITATION LIST

-   Patent Literature 1: Japanese Patent Application Laid-Open (JP-A)    No. 2013-057053-   Patent Literature 2: JP-A No. 2013-057052-   Patent Literature 3: JP-A No. 2013-057054-   Patent Literature 4: JP-A No. 2013-242522

SUMMARY OF INVENTION Technical Problem

An object of the disclosed embodiments is to provide a color materialdispersion liquid configured to form a coating film which is excellentin heat resistance and which is able to suppress color change duringheating; a color resin composition configured to form a color layerwhich is excellent in heat resistance and which is able to suppresscolor change during heating; a color filter which is excellent in heatresistance; a liquid crystal display device including the color filter;and a light-emitting display device including the color filter.

Solution to Problem

In a first embodiment, there is provided a color material dispersionliquid comprising (A) a color material, (B) a dispersant and (C) asolvent, wherein the color material (A) contains a compound which isrepresented by the following general formula (I) and which contains oneor more structures selected from the following structures (i) and (ii):

(i) “A” is an aliphatic hydrocarbon group containing two or morealicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain

(ii) at least one of R², R³, R⁴ and R⁵ is a cycloalkyl group optionallycontaining a substituent group or an aryl group optionally containing asubstituent group

where “A” is an “a”-valent organic group in which a carbon atom directlybound to “N” contains no n bond, and the organic group is an aliphatichydrocarbon group containing a saturated aliphatic hydrocarbon group atleast at a terminal position directly bound to “N” and optionallycontaining O, S, N in a carbon chain, or an aromatic group containing analiphatic hydrocarbon group at a terminal position directly bound to “N”and optionally containing O, S, N in a carbon chain; each of R¹, R², R³,R⁴ and R⁵ is independently a hydrogen atom, an alkyl group optionallycontaining a substituent group, or an aryl group optionally containing asubstituent group; each of R⁶ and R⁷ is independently an alkyl groupoptionally containing a substituent group or an alkoxy group optionallycontaining a substituent group; Ar¹ is a divalent aromatic groupoptionally containing a substituent group; B^(c−) is a “c”-valent anion;each of “a” and “c” is an integer of 2 or more; each of “b” and “d” isan integer of 1 or more; “e” is 0 or 1; each of “f” and “g” is aninteger of from 0 to 4; each of “f+e” and “g+e” is from 0 to 4; R¹s maybe the same or different; R²s may be the same or different; R³s may bethe same or different; R⁴s may be the same or different; R⁵s may be thesame or different; R⁶s may be the same or different; R⁷s may be the sameor different; Ar¹s may be the same or different; “e”s may be the same ordifferent; “f”s may be the same or different; and “g”s may be the sameor different.

In another embodiment, there is provided a color resin compositioncomprising (A) a color material, (B) a dispersant, (C) a solvent and (D)a binder component, wherein the color material (A) contains a compoundwhich is represented by the general formula (I) and which contains oneor more structures selected from the structures (i) and (ii).

In another embodiment, there is provided a color filter comprising atleast a transparent substrate and color layers disposed on thesubstrate, wherein at least one of the color layers contains a compoundwhich is represented by the general formula (I) and which contains oneor more structures selected from the structures (i) and (ii).

In the compound represented by the general formula (I) and contained inthe color material dispersion liquid, color resin composition and colorfilter of the disclosed embodiments, at least one of R², R³, R⁴ and R⁵may be a substituent group represented by the following formula (II) or(III)

where each of R¹¹, R¹² and R¹³ is independently a hydrogen atom, analkyl group containing 1 to 4 carbon atoms and optionally containing asubstituent group, or an alkoxy group containing 1 to 4 carbon atoms andoptionally containing a substituent group,

where each of R¹⁴, R¹⁵ and R¹⁶ is independently a hydrogen atom, analkyl group containing 1 to 4 carbon atoms and optionally containing asubstituent group, or an alkoxy group containing 1 to 4 carbon atoms andoptionally containing a substituent group.

In the compound represented by the general formula (I) and contained inthe color material dispersion liquid, color resin composition and colorfilter of the disclosed embodiments, “A” may be a substituent grouprepresented by the following general formula (IV):

where R²¹ is an alkylene group containing 1 to 3 carbon atoms andoptionally containing, as a substituent group, an alkyl group containing1 to 4 carbon atoms or an alkoxy group containing 1 to 4 carbon atoms;each of R²² and R²³ is independently an alkyl group containing 1 to 4carbon atoms or an alkoxy group containing 1 to 4 carbon atoms; “p” isan integer of from 1 to 3; each of “q” and “r” is independently aninteger of from 0 to 4; when two or more R²¹s are present, they may bethe same or different; when two or more R²²s are present, they may bethe same or different; when two or more R²³s are present, they may bethe same or different; and when two or more “r”s are present, they maybe the same or different.

In the compound-represented by the general formula (I) and contained inthe color material dispersion liquid, color resin composition and colorfilter of the disclosed embodiments, the anion represented by B^(c−) maybe a heteropolyoxometalate containing one or more elements selected fromtungsten and molybdenum.

In the color material dispersion liquid and color resin composition ofthe disclosed embodiments, the dispersant may contain a graft copolymercontaining a constitutional unit represented by the following generalformula (VII) and at last one selected from a constitutional unitrepresented by the following general formula (VI) and a constitutionalunit represented by the following general formula (VI′), or a blockcopolymer containing a block moiety that contains a constitutional unitrepresented by the following general formula (VIII) and a block moietythat contains at least one selected from a constitutional unitrepresented by the following general formula (VI) and a constitutionalunit represented by the following general formula (VI′).

In another embodiment, there is provided a color filter, wherein a colorlayer containing a compound represented by the general formula (I)contains a dispersant, and wherein the dispersant contains a graftcopolymer containing a constitutional unit represented by the followinggeneral formula (VII) and at last one selected from a constitutionalunit represented by the following general formula (VI) and aconstitutional unit represented by the following general formula (VI′),or a block copolymer containing a block moiety that contains aconstitutional unit represented by the following general formula (VIII)and a block moiety that contains at least one selected from aconstitutional unit represented by the following general formula (VI)and a constitutional unit represented by the following general formula(VI′):

where L⁴¹ is a direct bond or a divalent linking group; R⁴¹ is ahydrogen atom or a methyl group; R⁴² is a hydrocarbon group or amonovalent group represented by —[CH(R⁴⁶)—CH(R⁴⁷)—O]_(x1)—R⁴⁸ or—[(CH₂)_(y1)—O]_(z1)—R⁴⁸; each of R⁴⁶ and R⁴⁷ is independently ahydrogen atom or a methyl group; R⁴⁸ is a hydrogen atom, a hydrocarbongroup, or a monovalent group represented by —CHO, —CH₂CHO, —CO—CH═CH₂,—CO—C(CH₂)═CH₂, or —CH₂COOR⁴⁹; R⁴⁹ is a hydrogen atom or an alkyl grouphaving 1 to 5 carbon atoms; the hydrocarbon group optionally contains asubstituent group; x1 is an integer of from 1 to 18; y1 is an integer offrom 1 to 5; and z1 is an integer of from 1 to 18;

where X⁺ is an organic cation;

where L⁴² is a direct bond or a divalent linking group; R⁴³ is ahydrogen atom or a methyl group; and “Polymer” is a polymer chaincontaining one or more selected from a constitutional unit representedby the following general formula (IX) and a constitutional unitrepresented by the following general formula (X); and

where R⁴⁴ is a hydrogen atom or a methyl group; R⁴⁵ is a hydrocarbongroup or a monovalent group represented by—[CH(R⁵⁰)—CH(R⁵¹)—O]_(x2)—R⁵², —[(CH₂)_(y2)—O]_(z2)—R⁵²,—[CO—(CH₂)_(y2)—O]_(x2)—R⁵², —CO—O—R^(52′) or —O—CO—R⁵²″; each of R⁵⁰and R⁵¹ is independently a hydrogen atom or a methyl group; R⁵² is ahydrogen atom, a hydrocarbon group, or a monovalent group represented by—CHO, —CH₂CHO or —CH₂COOR⁵³; R^(52′) is a hydrocarbon group or amonovalent group represented by —[CH(R⁵⁰)—CH(R⁵¹)—O]_(x2′)—R⁵²,[(CH₂)_(y2′)—O]_(z2′)—R⁵², or —[CO—(CH₂)_(y2′)—O]_(z2′)—R⁵²; R^(52″) isan alkyl group having 1 to 18 carbon atoms; R⁵³ is a hydrogen atom or analkyl group having 1 to 5 carbon atoms; the hydrocarbon group optionallycontains a substituent group; each of x2 and x2′ is independently aninteger of from 1 to 18; each of y2 and y2′ is independently an integerof from 1 to 5; and each of z2 and z2′ is an integer of from 1 to 18:

where R⁵⁴ is a hydrogen atom or a methyl group; R⁵⁵ is a hydrocarbongroup or a monovalent group represented by—[CH(R⁵⁶)—CH(R⁵⁷)—O]_(x3)—R⁵⁸, [(CH₂)_(y3)—O]_(z3)—R⁵⁸,—[CO—(CH₂)_(y3)—O]_(z3)—R⁵⁸, —CO—O—R⁵⁹, or —O—CO—R⁶⁰; each of R⁵⁶ andR⁵⁷ is a hydrogen atom or a methyl group; R⁵⁸ is a hydrogen atom, ahydrocarbon group, or a monovalent group represented by —CHO, —CH₂CHO or—CH₂COOR⁶¹; R⁵⁹ is a hydrocarbon group or a monovalent group representedby —[CH(R⁵⁶)—CH(R⁵⁷)—O]_(x4)—R⁵⁸, —[(CH₂)_(y4)—O]_(z4)—R⁵⁸ or—[CO—(CH₂)_(y4)—O]_(z4)—R⁵⁸; R⁶⁰ is an alkyl group having 1 to 18 carbonatoms; R⁶¹ is a hydrogen atom or an alkyl group having 1 to 5 carbonatoms; the hydrocarbon group optionally contains a substituent group;“m” is an integer of from 1 to 5; “n” and “n′” are each an integer offrom 5 to 200; each of x3 and x4 is independently an integer of from 1to 18; each of y3 and y4 is independently an integer of from 1 to 5; andeach of z3 and z4 is independently an integer of from 1 to 18.

In the color resin composition according to the disclosed embodiments, adifference Δx (=x₁−x₀) between a chromaticity coordinate x₀ of a curedfilm ₍₀₎ obtained by drying the color resin composition and heating thedried color resin composition at 230° C. for 30 minutes to a thicknessat which a chromaticity coordinate y₀ is 0.082, and a chromaticitycoordinate x₁ of a cured film ₍₁₎ obtained by repeating, three times, aprocess of heating the cured film ₍₀₎ at 230° C. for 30 minutes and thenleaving the heated cured film ₍₀₎ to cool for 30 minutes, may be 0.025or less.

In the color resin composition according to the disclosed embodiments,the binder component (D) may contain a phosphorus atom-containingpolyfunctional monomer.

In the color filter according to the disclosed embodiments, the colorlayer containing the compound which is represented by the generalformula (I) and which contains one or more structures selected from thestructures (i) and (ii), may contain a binder component, and the bindercomponent may contain a phosphorus atom-containing polyfunctionalmonomer.

In the color filter according to the disclosed embodiments, for avisible light transmission spectrum of the color layer containing thecompound which is represented by the general formula (I) and whichcontains one or more structures selected from the structures (i) and(ii), a maximum transmittance at 400 nm or more and 500 nm or less maybe 86% or more; a minimum transmittance at 550 nm or more and 650 nm orless may be 2% or less; and a wavelength indicating the maximumtransmittance at 400 nm or more and 500 nm or less, may be in a range offrom 425 nm to 455 nm.

In another embodiment, there is provided a liquid crystal display devicecomprising the color filter according to the disclosed embodiments, acounter substrate, and a liquid crystal layer disposed between the colorfilter and the counter substrate.

In another embodiment, there is provided a light-emitting display devicecomprising the color filter according to the disclosed embodiments andan organic light-emitting body.

Advantageous Effects of Invention

According to the disclosed embodiments, the following can be provided: acolor material dispersion liquid configured to form a coating film whichis excellent in heat resistance and which is able to suppress colorchange during heating; a color resin composition configured to form acolor layer which is excellent in heat resistance and which is able tosuppress color change during heating; a color filter which is excellentin heat resistance; a liquid crystal display device including the colorfilter; and a light-emitting display device including the color filter.

BRIEF DESCRIPTION OF DRAWINGS

In the accompanying drawings,

FIG. 1 is a schematic sectional view of an embodiment of a color filter;

FIG. 2 is a schematic sectional view of an embodiment of a liquidcrystal display device;

FIG. 3 is a schematic sectional view of an embodiment of an organiclight-emitting display device;

FIG. 4 is a schematic view of the molecular association state of a colormaterial;

FIG. 5 shows transmission spectra of a blue color layer obtained by useof a color resin composition of Example 1;

FIG. 6 shows transmission spectra of a blue color layer obtained by useof a color resin composition of Example 2;

FIG. 7 shows transmission spectra of a blue color layer obtained by useof a color resin composition of Example 3;

FIG. 8 shows transmission spectra of a blue color layer obtained by useof a color resin composition of Example 5; and

FIG. 9 shows transmission spectra of a blue color layer obtained by useof a color resin composition of Comparative Example 1.

DESCRIPTION OF EMBODIMENTS

The embodiments of the present disclosure are explained below whilereferring to the drawings and the like. However, the present disclosurecan be implemented in many different aspects and is not to beinterpreted as being limited to the description of the embodimentsexemplified herein. In addition, in order to make the explanationclearer, although the drawings may be schematically represented in termsof the width, thickness, shape and the like of each part as comparedwith their actual form, they are only an example, and the interpretationof the present disclosure is not limited. In addition, in the presentDescription and each figure, the same reference numerals are given tothe same elements as those described previously with reference to theprevious figures, and a detailed explanation may be omitted asappropriate. In addition, for the purposes of explanation, although anexplanation is given using the terms “upward” or “downward”, the upwardand downward directions may also be reversed.

In the present Description, when a certain configuration such as acertain member or region is referred to as being “above (or below)”another configuration such as another member or region, unless there isa specific limitation, this includes not only a case where the certainconfiguration is directly above (or directly below) anotherconfiguration, but also a case where the certain configuration islocated above (or below) another configuration, that is, anothercomponent is included between the certain configuration and anotherconfiguration.

In the disclosed embodiments, “light” encompasses electromagnetic wavesin visible and non-visible wavelength ranges and radial rays. Radialrays include microwaves and electron beams, more specifically,electromagnetic waves with a wavelength of 5 μm or less and electronbeams. Also in the disclosed embodiments, “(meth)acrylic” means any ofacrylic and methacrylic, and “(meth)acrylate” means any of acrylate andmethacrylate.

1. Color Material Dispersion Liquid

The color material dispersion liquid according to the disclosedembodiments is a color material dispersion liquid comprising (A) a colormaterial, (B) a dispersant and (C) a solvent, wherein the color material(A) contains a compound which is represented by the following generalformula (I) and which contains one or more structures selected from thefollowing structures (i) and (ii) (hereinafter, the compound may besimply referred to as “the color material represented by the generalformula (I)”):

(i) “A” is an aliphatic hydrocarbon group containing two or morealicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain

(ii) at least one of R², R³, R⁴ and R⁵ is a cycloalkyl group optionallycontaining a substituent group or an aryl group optionally containing asubstituent group.

where “A” is an “a”-valent organic group in which a carbon atom directlybound to “N” contains no n bond, and the organic group is an aliphatichydrocarbon group containing a saturated aliphatic hydrocarbon group atleast at a terminal position directly bound to “N” and optionallycontaining O, S, N in a carbon chain, or an aromatic group containing analiphatic hydrocarbon group at a terminal position directly bound to “N”and optionally containing O, S, N in a carbon chain; each of R¹, R², R³,R⁴ and R⁵ is independently a hydrogen atom, an alkyl group optionallycontaining a substituent group, or an aryl group optionally containing asubstituent group; each of R⁶ and R⁷ is independently an alkyl groupoptionally containing a substituent group or an alkoxy group optionallycontaining a substituent group; Ar¹ is a divalent aromatic groupoptionally containing a substituent group; B^(c−) is a “c”-valent anion;each of “a” and “c” is an integer of 2 or more; each of “b” and “d” isan integer of 1 or more; “e” is 0 or 1; each of “f” and “g” is aninteger of from 0 to 4; each of “f+e” and “g+e” is from 0 to 4; R¹s maybe the same or different; R²s may be the same or different; R³s may bethe same or different; R⁴s may be the same or different; R⁵s may be thesame or different; R⁶s may be the same or different; R⁷s may be the sameor different; Ar¹s may be the same or different; “e”s may be the same ordifferent; “f”s may be the same or different; and “g”s may be the sameor different.

A coating film formed by use of the color material dispersion liquidaccording to the disclosed embodiments, shows a small color change afterheating and is excellent in heat resistance. The reason is notabsolutely clear; however, it is estimated as follows.

The inventors of the present disclosure made a detailed study on thecolor material, from the viewpoint of suppressing a change in the colorof the compound before and after heating. As a result, it was found thatexcellent heat resistance is obtained when the color materialrepresented by the general formula (I) is a compound that satisfies atleast one of the following (i) and (ii):

(i) “A” is an aliphatic hydrocarbon group containing two or morealicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain

(ii) at least one of R², R³, R⁴ and R⁵ is a cycloalkyl group optionallycontaining a substituent group or an aryl group optionally containing asubstituent group.

The reason why excellent heat resistance is obtained when the compoundcontains at least one of the above-specified structures, is notabsolutely clear. However, it is estimated as follows.

In the general formula (I), “A” is a linking group linking two or morecolor-forming moieties. It was estimated that the heat resistance of thecompound is increased when the linking group “A” contains a tough cyclicskeleton. However, it is estimated that the color-forming moietieslinked by the cyclic skeleton are more rigid than the case of beinglinked by a chain skeleton, resulting in a decrease in the freedom ofrotational motion. It was estimated that since the triarylmethane orxanthene moiety, which is a color moiety, contains a bulky structure, ifits rotational motion is suppressed, free molecular motion is inhibitedat the time of heating, which causes distortion and, as a result,becomes a cause for molecular decomposition. In the compound of thepresent disclosure, when “A” is the above-specified aliphatichydrocarbon group containing two or more alicyclic hydrocarbon groups,rotational motion is ensured at the linking moiety linking at least twoor more alicyclic hydrocarbon groups. Therefore, the two or morecolor-forming moieties are allowed to move independently to some degree,so that distortion is less likely to occur and, as a result, the heatresistance of the compound is increased.

R² to R⁵ are substituent groups bound to nitrogen atoms constituting thecolor-forming moieties. It is estimated that since at least one of R² toR⁵ has an aryl group, the conjugation range of conjugated electrons ofthe color-forming moieties expands to the aryl group, thus obtainingresonance stabilization and increased heat resistance. It is alsoestimated that since at least one of R² to R⁵ is an electron-donatingcycloalkyl group, electron density in the resonance structure of thecolor-forming moieties is increased, thereby increasing the stability ofthe color-forming moieties.

Due to the above reason, the heat resistance of the compound isincreased by obtaining at least one of the above-mentioned structures(i) and (ii).

In the color material represented by the general formula (I),triarylmethane or xanthene skeletons have such a structure that two ormore of them are connected through the linking group “A”, therebyforming a polyvalent cation. In the compound represented by the generalformula (I), a divalent or higher anion is used as a counter anion.Therefore, it is estimated that as shown by the example in FIG. 4, inthe compound represented by the general formula (I), a molecularassociation 210 in which molecules are continuously connected throughionic bonds and associated, is formed by using a divalent or highercation 201 in combination with a divalent or higher anion 202. Since themolecular association acts as one molecule in an aggregate of the colormaterial, it is estimated that the apparent molecular weight of themolecular association is much larger than that of a conventionalsalt-forming compound in which anions and cations bind to each other ona one-on-one basis, and the molecular association contributes to anincrease in the heat resistance of the compound. Since the molecularassociation is composed of cations and anions, it is thought that theionic bonds are strengthened by increasing cationicity (basicity),whereby the molecular association is synergistically stabilized. Also,since the two or more color-forming moieties in the molecularassociation are allowed to move independently to some degree, distortionis less likely to occur. Accordingly, it is thought that the ionic bondcan keep a distance, and the molecular association is synergisticallystabilized, therefore. From these reasons, it is estimated that acoating film formed by use of the color material dispersion liquid ofthe disclosed embodiments, is excellent in heat resistance.

The color material dispersion liquid of the disclosed embodimentscomprises at least (A) a color material, (B) a dispersant and (C) asolvent. The color material dispersion liquid of the disclosedembodiments may further contain other components, to the extent thatdoes not impair the effects of the disclosed embodiments.

The components of the color material dispersion liquid will be describedin detail.

(A) Color Material

In the color material dispersion liquid according to the disclosedembodiments, the color material (A) contains a compound which isrepresented by the following general formula (I) and which contains oneor more structures selected from the following structures (i) and (ii).Also, the color material dispersion liquid of the disclosed embodimentsmay further contain other color material, to the extent that does notimpair the effects of the disclosed embodiments. By the use of thespecific compound represented by the general formula (I), a coating filmor color layer excellent in heat resistance can be formed.

(The symbols in the general formula (I) are as described above.)

<Cation>

For the compound represented by the general formula (I), a color-formingcation is represented by the following general formula (A) and containsone or more structures selected from the following structures (i) and(ii):

(i) “A” is an aliphatic hydrocarbon group containing two or morealicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain

(ii) at least one of R², R³, R⁴ and R⁵ is a cycloalkyl group optionallycontaining a substituent group or an aryl group optionally containing asubstituent group.

(The symbols in the general formula (A) are the same as those in thegeneral formula (I).

The general formula (A) contains one or more structures selected from atriarylmethane moiety represented by the following general formula (B)(in the case where “e” is 0) and a xanthene moiety represented by thefollowing general formula (C) (in the case where “e” is 1). Since thetriarylmethane and xanthene moieties have excellent color-formingproperties, the compound represented by the general formula (I) can besuitably used as the color material.

For the linking group “A” linking the triarylmethane and xanthenemoieties, the carbon atom directly bound to “N” contains no n bond.Therefore, two or more triarylmethane and xanthene moieties that arepresent per molecule of the compound, become independent color-formingmoieties.

(The symbols in the general formulae (B) and (C) are the same as thosein the general formula (A).)

In the general formulae (I) and (A), the linking group “A” is an“a”-valent organic group in which a carbon atom directly bound to “N”(nitrogen atom) contains no n bond, and the organic group is analiphatic hydrocarbon group containing a saturated aliphatic hydrocarbongroup at least at a terminal position directly bound to “N” andoptionally containing O (oxygen atom), S (sulfur atom), N in a carbonchain, or an aromatic group containing an aliphatic hydrocarbon group ata terminal position directly bound to “N” and optionally containing O,S, N in a carbon chain. Since the carbon atom directly bound to “N”contains no n bond, the color characteristics of the color-formingmoiety, such as color tone and transmittance, are not affected by thelinking group “A” and other color-forming moieties.

In “A”, as long as the carbon atom being at the terminal position anddirectly bound to “N” contains no n bond, the aliphatic hydrocarbongroup containing a saturated aliphatic hydrocarbon group at least at aterminal position directly bound to “N”, may be straight-chain,branched-chain or cyclic, may contain an unsaturated bond in carbonatoms except the one in the terminal position, may contain a substituentgroup, or may contain O, S, N in the carbon chain. For example, acarbonyl group, a carboxyl group, an oxycarbonyl group and/or an amidegroup may be contained, and the hydrogen atom of the hydrocarbon groupmay be substituted by a halogen atom, etc.

Also in “A”, as the aromatic group containing an aliphatic hydrocarbongroup, examples include, but are not limited to, a monocyclic orpolycyclic aromatic group which contains an aliphatic hydrocarbon groupcontaining a saturated aliphatic hydrocarbon group at least at theterminal position directly bound to “N”. The aromatic group may containa substituent group, and it may be a heterocyclic ring containing O, S,N.

Particularly, from the viewpoint of skeleton toughness, it is preferablethat “A” contains an alicyclic hydrocarbon group or an aromatic group.

As the alicyclic hydrocarbon group, examples include, but are notlimited to, groups containing cyclohexane, cyclopentane, norbornane,bicyclo[2.2.2]octane, tricyclo[5.2.1.0^(2,6)]decane and adamantane. Asthe aromatic group, examples include, but are not limited to, a groupcontaining a benzene ring and a group containing a naphthalene ring.

In the present disclosure, from the viewpoint of obtaining both thetoughness and the molecular motion freedom and increasing the heatresistance of the compound, it is preferable that “A” satisfies theabove-mentioned (i), that is, “A” is an aliphatic hydrocarbon groupcontaining two or more alicyclic hydrocarbon groups, containing asaturated aliphatic hydrocarbon group at a terminal position directlybound to “N”, and optionally containing O, S, N in a carbon chain. It ismore preferable that “A” is an aliphatic hydrocarbon group containingtwo or more cycloalkylene groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain. It is still morepreferable that “A” contains such a structure that two or more alicyclichydrocarbon groups are bound by a straight-chain or branched-chainaliphatic hydrocarbon group.

The two or more alicyclic hydrocarbon groups may be the same as ordifferent from each other. As the alicyclic hydrocarbon groups, examplesinclude, but are not limited to, the above-mentioned alicyclichydrocarbon groups. Of them, cyclohexane and cyclopentane are preferred.

In the present disclosure, from the viewpoint of the heat resistance, itis preferable that “A” is a substituent group represented by thefollowing general formula (IV):

where R²¹ is an alkylene group containing 1 to 3 carbon atoms andoptionally containing, as a substituent group, an alkyl group containing1 to 4 carbon atoms or an alkoxy group containing 1 to 4 carbon atoms;each of R²² and R²³ is independently an alkyl group containing 1 to 4carbon atoms or an alkoxy group containing 1 to 4 carbon atoms; “p” isan integer of from 1 to 3; each of “q” and “r” is independently aninteger of from 0 to 4; when two or more R²¹s are present, they may bethe same or different; when two or more R²²s are present, they may bethe same or different; when two or more R²³s are present, they may bethe same or different; and when two or more “r”s are present, they maybe the same or different.

From the viewpoint of obtaining both the toughness and the thermalmotion of the color-forming moieties and increasing the heat resistance,R²¹ is preferably an alkylene group containing 1 to 3 carbon atoms. Asthe alkylene group, examples include, but are not limited to, amethylene group, an ethylene group and a propylene group. Of them, amethylene group and an ethylene group are preferred, and a methylenegroup is more preferred.

As the alkyl group containing 1 to 4 carbon atoms, examples include, butare not limited to, a methyl group, an ethyl group, a propyl group and abutyl group. They may be straight-chain or branched-chain.

As the alkoxy group containing 1 to 4 carbon atoms, examples include,but are not limited to, a methoxy group, an ethoxy group, a propoxygroup and a butoxy group. They may be straight-chain or branched-chain.

Examples of the alkyl group containing 1 to 4 carbon atoms and thealkoxy group containing 1 to 4 carbon atoms as R²² and R²³ include, butare not limited to, the above-mentioned substituent groups that R²¹ maycontain.

From the viewpoint of the heat resistance, it is preferable that thenumber of cyclohexanes (cyclohexylene groups) in the general formula(IV) is from 2 to 4, that is, “p” is from 1 to 3. It is more preferablethat p is 1 or 2.

The numbers of the substituent groups R²² and R²³ that the cyclohexylenegroup may contain, are not particularly limited. From the viewpoint ofthe heat resistance, each of the numbers is preferably from 1 to 3, andmore preferably 1 or 2. That is, it is preferable that each of “q” and“r” is an integer of from 1 to 3, and it is more preferable that each of“q” and “r” is an integer of 1 or 2.

As the linking group “A”, preferred examples include, but are notlimited to, the following groups.

Each of R¹ to R⁵ is independently a hydrogen atom, an alkyl groupoptionally containing a substituent group, or an aryl group optionallycontaining a substituent group.

The alkyl group as R¹ is not particularly limited. As the alkyl group,examples include, but are not limited to, a straight-chain,branched-chain or cyclic alkyl group containing 1 to 20 carbon atoms.The alkyl group as R¹ is preferably a straight-chain or branched-chainalkyl group containing 1 to 8 carbon atoms, more preferably astraight-chain or branched-chain alkyl group containing 1 to 5 carbonatoms, and still more preferably an ethyl group or a methyl group. Asthe substituent group that the alkyl group as R¹ may contain, examplesinclude, but are not limited to, an aryl group, a halogen atom and ahydroxyl group. As the substituted alkyl group, examples include, butare not limited to, a benzyl group. The aryl group as R¹ is notparticularly limited. As the aryl group, examples include, but are notlimited to, a phenyl group and a naphthyl group. As the substituentgroup that the aryl group as R¹ may contain, examples include, but arenot limited to, an alkyl group, an alkoxy group, a halogen atom and ahydroxyl group.

As the alkyl group optionally containing a substituent group or the arylgroup optionally containing a substituent group as R², R³, R⁴ and R⁵,the examples provided above as R¹ can be preferably used. From theviewpoint of the heat resistance, it is preferable that at least one ofR² to R⁵ is a cycloalkyl group optionally containing a substituent groupor an aryl group optionally containing a substituent group. Since atleast one of R² to R⁵ contains a cycloalkyl group or an aryl group,intermolecular interaction is reduced by steric hindrance and, as aresult, influences of heat on the color-forming moieties can be reduced.Therefore, the heat resistance of the compound is excellent.

When at least one of R² to R⁵ is an aryl group or a cycloalkyl group,compared to the case of not containing at least one of the structures(i) and (ii), the reactivity of conjugated cation increases to increasethe strength of an ionic bond with counter anion, thereby stabilizingion pairs. Therefore, the compound obtains excellent heat resistance.

For the compound of the disclosed embodiments, from the viewpoint of theheat resistance, it is preferable that at least one of R² to R⁵ is asubstituent group represented by the following formula (II) or (III):

where each of R¹¹, R¹² and R¹³ is independently a hydrogen atom, analkyl group containing 1 to 4 carbon atoms and optionally containing asubstituent group, or an alkoxy group containing 1 to 4 carbon atoms andoptionally containing a substituent group,

where each of R¹⁴, R¹⁵ and R¹⁶ is independently a hydrogen atom, analkyl group containing 1 to 4 carbon atoms and optionally containing asubstituent group, or an alkoxy group containing 1 to 4 carbon atoms andoptionally containing a substituent group.

Examples of the alkyl group containing 1 to 4 carbon atoms as R¹¹, R¹²,R¹³, R¹⁴, R¹⁵ and R¹⁶ include a methyl group, an ethyl group, a propylgroup and a butyl group. The alkyl group may be straight-chain orbranched-chain. As the alkoxy group containing 1 to 4 carbon atoms,examples include a methoxy group, an ethoxy group, a propoxy group and abutoxy group. The alkoxy group may be straight-chain or branched-chain.

As the substituent group that the alkyl group and the alkoxy group maycontain, examples include, but are not limited to, a halogen atom and ahydroxyl group.

In the case of containing a substituent group represented by the generalformula (II), from the viewpoint of the heat resistance, it ispreferable that at least one of R¹¹, R¹² and R¹³ is an alkyl groupcontaining 1 to 4 carbon atoms and optionally containing a substituentgroup, or an alkoxy group containing 1 to 4 carbon atoms and optionallycontaining a substituent group. It is more preferable that at least oneof R¹¹ and R¹² is an alkyl group containing 1 to 4 carbon atoms andoptionally containing a substituent group, or an alkoxy group containing1 to 4 carbon atoms and optionally containing a substituent group.

In the case of containing a substituent group represented by the generalformula (III), from the viewpoint of the heat resistance, it ispreferable that at least one of R¹⁴, R¹⁵ and R¹⁶ is an alkyl groupcontaining 1 to 4 carbon atoms and optionally containing a substituentgroup, or an alkoxy group containing 1 to 4 carbon atoms and optionallycontaining a substituent group. It is more preferable that at least oneof R¹⁴ and R¹⁵ is an alkyl group containing 1 to 4 carbon atoms andoptionally containing a substituent group, or an alkoxy group containing1 to 4 carbon atoms and optionally containing a substituent group.

As the substituent group represented by the general formula (II) and thesubstituent group represented by the general formula (III), preferredexamples include, but are not limited to, the following groups.

Each of R⁶ and R⁷ is independently an alkyl group optionally containinga substituent group or an alkoxy group optionally containing asubstituent group. The alkyl group as R⁶ and R⁷ is not particularlylimited. It is preferably a straight-chain or branched-chain alkyl groupcontaining 1 to 8 carbon atoms, and more preferably an alkyl groupcontaining 1 to 4 carbon atoms. As the alkyl group containing 1 to 4carbon atoms, examples include a methyl group, an ethyl group, a propylgroup and a butyl group, and the alkyl group may be straight-chain orbranched-chain.

The alkoxy group as R⁶ and R⁷ is not particularly limited. It ispreferably a straight-chain or branched-chain alkoxy group containing 1to 8 carbon atoms, and more preferably an alkoxy group containing 1 to 4carbon atoms. As the alkoxy group containing 1 to 4 carbon atoms,examples include a methoxy group, an ethoxy group, a propoxy group and abutoxy group, and the alkoxy group may be straight-chain orbranched-chain.

Each of the number of the substituent groups of R⁶ and the number of thesubstituent groups of R⁷, that is, each of “f” and “g” is independentlyan integer of from 0 to 4. Each of them is preferably an integer of from0 to 2, and more preferably an integer of 0 or 1.

Each of R⁶ and R⁷ may be substituted at any position of an aromatic ringwith a resonance structure in the triarylmethane or xanthene skeleton.It is preferable that each of R⁶ and R⁷ is substituted at themeta-position, relative to the substitution position of the amino grouprepresented by —NR²R³ or —NR⁴R⁵.

The divalent aromatic group as Ar¹ is not particularly limited. Thearomatic group may be an aromatic hydrocarbon group comprising a carbonring, or a heterocyclic group. As the aromatic hydrocarbon in thearomatic hydrocarbon group, examples include, but are not limited to, abenzene ring; condensed polycyclic aromatic hydrocarbons such as anaphthalene ring, a tetralin ring, an indene ring, a fluorene ring, ananthracene ring and a phenanthrene ring; and chain polycyclichydrocarbons such as biphenyl, terphenyl, diphenylmethane,triphenylmethane and stilbene. The chain polycyclic hydrocarbons maycontain O, S, N in the chain skeleton, such as diphenyl ether.Meanwhile, as the heterocyclic ring in the heterocyclic group, examplesinclude, but are not limited to, 5-membered heterocyclic rings such asfuran, thiophene, pyrrole, oxazole, thiazole, imidazole and pyrazole;6-membered heterocyclic rings such as pyran, pyrone, pyridine, pyrone,pyridazine, pyrimidine and pyrazine; and condensed polycyclicheterocyclic rings such as benzofuran, thionaphthene, indole, carbazole,coumarin, benzo-pyrone, quinoline, isoquinoline, acridine, phthalazine,quinazoline and quinoxaline. These aromatic groups may further contain,as a substituent group, an alkyl group, an alkoxy group, a hydroxylgroup, a halogen atom, etc.

In the general formulae (I) and (A), “a” is the number of thecolor-forming moieties constituting the cation, and “a” is an integer of2 or more. The upper limit of “a” is not particularly limited. From theviewpoint of ease of production, “a” is preferably 4 or less, and morepreferably 3 or less.

For the cation represented by the general formula (A), the molecularweight is preferably 1200 or more, and more preferably 1300 or more,from the point of view that the compound obtains excellent heatresistance and a color change of the compound is easily suppressed atthe time of heating.

<Anion>

The compound represented by the general formula (I) contains a divalentor higher anion (B^(c−)). It is estimated that in the compoundrepresented by the general formula (I), as shown by the example in FIG.4, a molecular association 10 in which molecules are continuouslyconnected through ionic bonds and associated, is formed by using adivalent or higher cation 1 in combination with a divalent or higheranion 2. Since the molecular association acts as one molecule in anaggregate of the color material, it is estimated that the apparentmolecular weight of the molecular association is much larger than thatof a conventional salt-forming compound in which anions and cations bindto each other on a one-on-one basis, and the molecular associationcontributes to an increase in the heat resistance of the compound.

The molecular association 10 contains the ionic bonds. Therefore, when acontinuous ion association is formed by using a counter anion that “c”is 2 or more, many ionic bonds are contained in the association.Therefore, when “c” is 2 or more, the effect of increasing ionic bondstrength which is obtained in the case of containing at least one of thestructures (i) and (ii), is higher than the case where “c” is 1, andheat resistance and reliability such as suppression of elution from acoating film, is increased.

The divalent or higher anion (B^(c−)) is not particularly limited andmay be an organic or inorganic anion.

When B^(c−) is an organic anion, the structure is not particularlylimited. The organic anion is preferably an organic group containing ananionic substituent group.

As the anionic substituent group, examples include, but are not limitedto, imide acid groups such as —SO₂N⁻SO₂CH₃, —SO₂N⁻COCH₃, —SO₂N⁻SO₂CF₃,—SO₂N⁻COCF₃, —CF₂SO₂N⁻SO₂CH₃, —CF₂SO₂N⁻COCH₃, —CF₂SO₂N⁻SO₂CF₃, and—CF₂SO₂N⁻COCF₃, and substituent groups such as —SO₃ ⁻, —CF₂SO₃ ⁻, —PO₃²⁻, —COO⁻, —CF₂PO₃ ²⁻, and —CF₂COO⁻.

From the viewpoint of stabilizing cation and stabilizing the colorformed by the color material, it is preferable to use two or moremonovalent anionic substituent groups. From the viewpoint ofavailability of raw materials, production cost and, due to their highacidity, being highly effective in stabilizing cation to maintain thecolor thus formed, imide acid groups, —SO₃ ⁻ and —CF₂SO₃ ⁻are preferred,and —SO₃ ⁻(sulfonato group) is more preferred.

In the case of introducing two or more anionic substituent groups, theymay be the same substituent groups or different substituent groups.

The organic group to which the anionic substituent group is bound bysubstitution, is not particularly limited. As the organic group, forexample, the same organic group as that described in paragraphs 0053 to0055 in Japanese Patent Application Laid-Open (JP-A) No. 2013-057053,may be used.

On the other hand, when B^(c−) is an inorganic anion, the structure andcomposition is not particularly limited, as long as it is an inorganicoxoacid or a dehydrated condensate thereof. As the inorganic anion,examples include, but are not limited to, anions of divalent or higheroxoacids (e.g., phosphate ion, sulfate ion, chromate ion, tungstate ion(WO₄ ²⁻) and molybdate ion (MoO₄ ²⁻)), polyoxometalate ions formed bycondensation of oxoacids, and mixtures thereof.

The polyoxometalate may be isopolyoxometalate ion (M_(m)O_(n))^(c−) orheteropolyoxometalate ion (X_(l)M_(m)O_(n))^(c−). In the ionic formulae,“M” is a polyatom; “X” is a heteroatom; “m” is the compositional ratioof the polyatom; and “n” is the compositional ratio of the oxygen atom.As the polyatom (M), examples include, but are not limited to, Mo, W, V,Ti and Nb. As the heteroatom (X), examples include, but are not limitedto, Si, P, As, S, Fe and Co. A counter cation such as Na⁺ or H⁺ may becontained in a part of the polyoxometalate.

From the viewpoint of excellent heat resistance, preferred is apolyoxometalate containing one or more elements selected from tungsten(W) and molybdenum (Mo).

As the polyoxometalate, examples include, but are not limited to, atungstate ion [W₁₀O₃₂]⁴⁻ and a molybdate ion [Mo₆O₁₉]²⁻, which areisopolyoxometalates, and phosphotungstate ions [PW₁₂O₄₀]³⁻ and[P₂W₁₈O₆₂]⁶⁻, a silicotungstate ion [SiW₁₂O₄₀]⁴⁻, a phosphomolybdate ion[PMo₁₂O₄₀]³⁻, a silicomolybdate ion [SiMo₁₂O₄₀]⁴⁻, phosphotungsticmolybdate ions [PW_(12-x)Mo_(x)O₄₀]³⁻ (where x is an integer of from 1to 11) and [P₂W_(18-y)Mo_(y)O₆₂]⁶⁻ (where y is an integer of from 1 to17) and a silicotungstic molybdate ion [SiW_(12-x)Mo_(x)O₄₀]⁴⁻ (where xis an integer of from 1 to 11), which are all heteropolyoxometalates. Ofthem, from the viewpoint of heat resistance and availability of rawmaterials, the polyoxometalate containing at least one of tungsten (W)and molybdenum (Mo) is preferably a heteropolyoxometalate, and morepreferably a heteropolyoxometalate containing phosphorus (P).

The polyoxometalate is still more preferably one selected from the groupconsisting of phosphotungstic molybdate ions [PW₁₀Mo₂O₄₀]³⁻ and[PW₁₁Mo₁O₄₀]³⁻ and phosphotungstate ion [PW₁₂O₄₀]³⁻, from the viewpointof the heat resistance.

The content ratio of the tungsten to the molybdenum is not particularlylimited. Particularly from the viewpoint of excellent heat resistance,the molar ratio of the tungsten to the molybdenum is preferably from100:0 to 85:15, and more preferably from 100:0 to 90:10.

As the divalent or higher anion (B^(c−)), the above-mentionedpolyoxometalate anions can be used alone or in combination of two ormore kinds. In the case of using a combination of two or more kinds ofthe above-mentioned polyoxometalate anions, the molar ratio of thetungsten to the molybdenum in the whole polyoxometalate anion ispreferably in the above range.

In the compound represented by the general formula (I), “b” is thenumber of molecules of the cation in the molecular association; “d” isthe number of molecules of the anion in the molecular association; andeach of “b” and “d” is an integer of 1 or more. For a crystal oraggregate of the compound of the present disclosure, each of “b” and “d”is not limited to 1 and can be a natural number of 2 or more, such as anatural number of 2, 3, 4 and so on. From the viewpoint of the heatresistance, it is preferable that at least part of the compound of thepresent disclosure forms a molecular association where “b”≥2. From theviewpoint of the heat resistance, it is also preferable that at leastpart of the compound forms a molecular association where “d”≥2.

When “b” is 2 or more, the cations present in the molecular associationmay be one kind of cations or may be a combination of two or more kindsof cations. When “d” is 2 or more, the anions present in the molecularassociation may be one kind of anions, may be a combination of two ormore kinds of anions, or may be a combination of organic anions andinorganic anions.

It is also preferable that the compound of the present disclosure isnormal salt, from the point of view that problems arising from the useof acid salt, such as non-smooth dispersion or dispersion liquidgelation during storage, are prevented, and the compound obtains highdispersibility and high dispersion stability.

The method for producing the compound represented by the general formula(I) is not particularly limited. For example, the compound can beobtained by synthesizing the cation represented by the general formula(A) by a method described below, and then incorporating a desiredcounter anion thereinto. In the case of synthesizing the cationrepresented by the general formula (A) by the below-described method,substituent groups as R¹ to R⁷, such as alkyl and aryl groups, may beincorporated in a compound represented by the following general formula(1) and a compound represented by the following general formula (2), orR¹ to R⁷ may be hydrogen atoms in the compounds represented by thefollowing general formulae (1) and (2) and may be substituted by a knownmethod after the cation represented by the general formula (A) issynthesized.

(Synthesis of the Cation Represented by the General Formula (A))

As the method for producing the cation represented by the generalformula (A), examples include, but are not limited to, a method forproducing the cation by condensation reaction of the compoundsrepresented by the following general formulae (1) and (2), using achlorinating agent such as phosphorus oxychloride.

In the general formula (1), “A”, R¹ and “a” are the same as those of thegeneral formula (A). In the general formula (2), R², R³, R⁴, R⁵, R⁶, R⁷,“e”, “f” and “g” are the same as those of the general formula (A). Ar²in the general formula (1) is one in which a hydrogen atom is bound toAr¹ in the general formula (A).

According to the above-mentioned synthesis method, bydehydration-condensation reaction between Ar² in the general formula (1)and the carbonyl group in the general formula (2), a triarylmethane orxanthene skeleton is formed, and the linking group “A” is introduced atthe same time. Therefore, according to this synthesis method, colormaterials with different polymerization degrees are not formed. Also, anunreacted product, if present, contains a largely different skeleton andcan be separated easily; therefore, the cation represented by thegeneral formula (A) can be obtained in high purity and high yield.

The amount of the compound represented by the general formula (2) usedin the above reaction, varies depending on the desired valence. “a”. Forexample, when “a” is 2, the amount is preferably from 1.5 molarequivalent to 4.0 molar equivalent, more preferably from 1.5 molarequivalent to 3.0 molar equivalent, and still more preferably from 1.8molar equivalent to 2.2 molar equivalent, with respect to the compoundrepresented by the general formula (1), from the viewpoint ofsuppressing the production of a by-product and increasing the reactionyield.

For the reaction, the reaction temperature is not particularly limited.In general, it is from about 110° C. to about 150° C. From the viewpointof suppressing a side reaction, it is preferably from 110° C. to 120° C.Also for the reaction, the reaction pressure is not particularlylimited, and it is preferably from normal pressure to 0.1 MPa, and morepreferably normal pressure. The reaction time may vary depending on thesynthesis amount, reaction temperature, etc. It is generally in a rangeof from 1 hour to 10 hours, and preferably in a range of from 1 hour to5 hours.

The amount of the added chlorinating agent such as phosphorusoxychloride, is not particularly limited. It is generally from 1.5 molarequivalent to 3.0 molar equivalent, and preferably from 1.8 molarequivalent to 3.0 molar equivalent, with respect to the compoundrepresented by the general formula (1), from the viewpoint of increasingthe reaction yield.

The compound represented by the general formula (1) may be acommercially-available product, or it can be obtained by synthesis.

The method for synthesizing the compound represented by the generalformula (1) is not particularly limited. For example, it can be obtainedby reacting, in a solvent, a halogenated aromatic compound containingthe desired substituent group Ar^(e) with an “a”-valent amine compoundcontaining the desired substituent group “A”, in the presence of a baseand using a catalyst such as palladium acetate.

The compound represented by the general formula (2) may be acommercially-available product, or it can be obtained by synthesis.

The method for synthesizing the compound represented by the generalformula (2) is not particularly limited. For example, it can be obtainedby reacting, in a solvent, 4,4′-dichlorobenzophenone,3,6-dichloroxanthone or the like with an amine compound containing adesired substituent group such as a substituent group represented by thegeneral formula (II) or (III), in the presence of a base and using acatalyst such as palladium acetate.

<Other Color Material>

For the purpose of color tone control, as needed, the color material (A)can further contain other color material, to the extent that does notimpair the effects of the disclosed embodiments. For example, it can beselected from conventionally-known pigments and dyes, according to thepurpose, and such pigments and dyes can be used alone or in combinationof two or more kinds.

As the other color material, examples include, but are not limited to,pigments such as C.I. Pigment Violet 1, C.I. Pigment Violet 2, C.I.Pigment Violet 3, C.I. Pigment Violet 19, C.I. Pigment Violet 23, C.I.Pigment Blue 1, C.I. Pigment Blue 15, C.I. Pigment Blue 15:3, C.I.Pigment Blue 15:4, C.I. Pigment Blue 15:6, C.I. Pigment Blue 60, C.I.Pigment Red 81 and C.I. Pigment Red 82; dyes such as Acid Red; andsalt-forming (lake) compounds of xanthene dyes.

The content of the other color material is preferably 40 parts by massor less, and more preferably 20 parts by mass or less, with respect to100 parts by mass (the total amount) of the color material (A). As longas the content is within the range, color tone control is possible,without impairing the properties of the color material represented bythe general formula (I), such as high transmittance, heat resistance andlight resistance.

The other color material may be contained in the color materialdispersion liquid of the disclosed embodiments, or a color materialdispersion liquid containing the other color material may be separatelyprepared and mixed with the color material dispersion liquid of thedisclosed embodiments at the time of preparing the below-described colorresin composition.

The average dispersed particle diameter of the color material (A) usedin the disclosed embodiments, is not particularly limited, as long as acolor layer formed by use of the color material (A) can provide adesired color. From the viewpoint of increasing contrast and obtainingexcellent heat resistance, the average dispersed particle diameter ispreferably in a range of from 10 nm to 200 nm, and more preferably in arange of from 20 nm to 150 nm. By setting the average dispersed particlediameter of the color material (A) within the range, the liquid crystaldisplay device and light-emitting display device produced by use of thecolor material dispersion liquid according to the disclosed embodiments,can obtain high contrast and high quality.

The average dispersed particle diameter of the color material (A) in thecolor material dispersion liquid, is the dispersed particle diameter ofthe color material particles dispersed in a dispersion medium thatcontains at least a solvent, and it is measured with a laser scatteringparticle size distribution analyzer. The average dispersed particlediameter can be measured as follows with a laser scattering particlesize distribution analyzer: the color material dispersion liquid isappropriately diluted with a solvent, which is the same type of solventas the solvent used in the color material dispersion liquid, to aconcentration that is measurable with a laser scattering particle sizedistribution analyzer (e.g., 1,000-fold) and then measured with a laserscattering particle size distribution analyzer (e.g., NANOTRAC PARTICLESIZE ANALYZER UPA-EX150 manufactured by Nikkiso Co., Ltd.) by a dynamiclight scattering method at 23° C. This average dispersed particlediameter is a volume average particle diameter.

In the color material dispersion liquid according to the disclosedembodiments, the content of the color material is not particularlylimited. From the viewpoint of dispersibility and dispersion stability,the content of the color material is preferably in a range of from 5% bymass to 40% by mass, and more preferably in a range of from 10% by massto 20% by mass, with respect to the total amount of the color materialdispersion liquid.

Also in the color material dispersion liquid according to the disclosedembodiments, when a mixture of the color material represented by thegeneral formula (I) and the other color material is used as the colormaterial (A), the mixing ratio can be appropriately determined to obtaina desired color tone, and it is not particularly limited. From theviewpoint of heat resistance, the color material represented by thegeneral formula (I) is preferably 50 parts by mass or more, morepreferably 70 parts by mass or more, and still more preferably 80 partsby mass or more of the total amount (100 parts by mass) of the colormaterial (A).

(B) Dispersant

In the color material dispersion liquid according to the disclosedembodiments, the dispersant is used to disperse at least the colormaterial represented by the general formula (I) in the solvent. Thedispersant can be appropriately selected from those that areconventionally used as dispersants. As the dispersant, examples include,but are not limited to, surfactants such as cationic, anionic, nonionic,amphoteric, silicone-based and fluorine-based surfactants. Ofsurfactants, a polymer surfactant (a polymer dispersant) is preferredfrom the point of view that it can homogeneously and finely disperse thecolor material. These dispersants can be used alone or in combination oftwo or more kinds.

As the polymer dispersant, examples include, but are not limited to,(co)polymers of unsaturated carboxylic acid esters such as polyacrylicacid ester; (partial) amine salts, (partial) ammonium salts and(partial) alkylamine salts of (co)polymers of unsaturated carboxylicacids such as polyacrylic acid; (co)polymers of hydroxylgroup-containing unsaturated carboxylic acid esters such as hydroxylgroup-containing polyacrylic acid ester, and modified products thereof;polyurethanes; unsaturated polyamides; polysiloxanes; long-chainpolyaminoamide phosphates; polyethyleneimine derivatives (amide andsalts thereof, obtained by reaction of poly(lower alkyleneimine) andpolyester containing a free carboxyl group); and polyallylaminederivatives (reaction products obtained by reaction of polyallylamineand one or more compounds selected from the group consisting of thefollowing three kinds of compounds: polyester containing a free carboxylgroup, polyamide, and a co-condensate of ester and amide (polyesteramide)).

Commercially-available products of such dispersants includeDISPERBYK-2000, 2001, BYK-LPN 6919 and 21116 (product names,manufactured by BYK Japan KK) and AJISPER PB821 and AJISPER 881 (productnames, manufactured by Ajinomoto Co., Inc.), for example. Of them,BYK-LPN 6919 and 21116 are preferred from the viewpoint of heatresistance, electric reliability and dispersibility.

From the point of view that the color material can be appropriatelydispersed and excellent dispersion stability can be achieved, thepolymer dispersant is preferably one or more kinds selected from thegroup consisting of a polymer containing at least a constitutional unitrepresented by the following general formula (V) and urethane-baseddispersants composed of compounds containing one or more urethane bonds(—NH—COO—) per molecule.

The polymer dispersant preferably contains a polymer containing at leastone selected from a constitutional unit represented by the followinggeneral formula (VI) and a constitutional unit represented by thefollowing general formula (VI′), from the point of view that thedispersibility and heat resistance of the color material represented bythe general formula (I) can be increased, and a coating film with higherluminance and excellent alkali resistance can be formed. Due tocontaining the specific bulky structure, the color material representedby the general formula (I) has a tendency to obtain a large molecularweight and poor re-solubility in solvents. However, if the colormaterial is used in combination with the polymer containing at least oneselected from the constitutional unit represented by the followinggeneral formula (VI) and the constitutional unit represented by thefollowing general formula (VI′), since the polarity of the adsorptiongroup in the polymer dispersant differs from other basic dispersants,the solubility of the dispersed substance in solvents is changed.Therefore, the color material obtains excellent re-solubility insolvents.

Hereinafter, the preferred dispersant will be described in detail.

<Polymer Containing at Least a Constitutional Unit Represented by theFollowing General Formula (V)>

In the disclosed embodiments, a polymer containing at least aconstitutional unit represented by the following general formula (V) canbe preferably used as the dispersant:

where R³¹ is a hydrogen atom or a methyl group; “L” is a direct bond ora divalent linking group; “Q” is a group represented by the followinggeneral formula (V-a) or a nitrogen-containing heterocyclic group whichcan form a salt and which optionally contains a substituent group:

where each of R³² and R³³ is independently a hydrogen atom or ahydrocarbon group which optionally contains a heteroatom, and R³² andR³³ can be the same as or different from each other.

In the general formula (V), “L” is a direct bond or a divalent linkinggroup. The direct bond means that “Q” directly binds to a carbon atom inthe general formula (v), not through a linking group.

As the divalent linking group as “L”, examples include, but are notlimited to, an alkylene group containing 1 to 10 carbon atoms, anarylene group, a —CONH— group, a —COO— group, an ether group containing1 to 10 carbon atoms (—R′—OR″— where each of R′ and R″ is independentlyan alkylene group) and combinations thereof.

From the viewpoint of dispersibility, “L” in the general formula (V) ispreferably a direct bond or a divalent linking group containing a —CONH—group or a —COO— group.

The above dispersants can be particularly preferably used by allowingthe constitutional unit represented by the general formula (V) of thedispersants to form a salt by the below-described salt forming agent, ata desired ratio.

As the polymer containing the constitutional unit represented by thegeneral formula (V), block and graft copolymers containing structuresdisclosed in International Publication No. WO2011/108495 and JP-A Nos.2013-054200, 2010-237608 and 2011-75661 are particularly preferred, fromthe point of view that the dispersibility and dispersion stability ofthe color material and the heat resistance of the resin composition canbe increased, and a high-luminance and high-contrast color layer can beformed.

Commercially-available products of the polymers containing theconstitutional unit represented by the general formula (V) includeBYK-LPN 6919.

<<Salt Forming Agent>>

In the disclosed embodiments, the dispersant is preferably a polymer inwhich at least a part of a nitrogen site of the constitutional unitrepresented by the general formula (V) forms a salt (hereinafter, thisstate may be referred to as “salt-modified”).

In the disclosed embodiments, by allowing the nitrogen site of theconstitutional unit represented by the general formula (V) to form asalt using the salt forming agent, the dispersant strongly adsorbs tothe color material similarly forming a salt, so that the dispersibilityand dispersion stability of the color material are increased. As thesalt forming agent, acidic organophosphorus compounds, organic sulfonicacid compounds and quaternizing agents, which are disclosed inInternational Publication No. WO2011/108495 and JP-A No. 2013-054200,can be preferably used. Especially when the salt forming agent is anacidic organophosphorus compound, salt-forming moieties containing theacidic organophosphorus compound of the dispersant are localized on thesurface of the color material particles, and thus the color materialsurface reaches a state of being covered with phosphate. Therefore,attacks on the dye skeleton of the color material by active oxygen(hydrogen abstraction) are suppressed, so that the heat resistance andlight resistance of the color material containing the dye skeleton areincreased. For this reason, color deterioration by high-temperatureheating can be further suppressed by the use of the polymersalt-modified by the acidic organophosphorus compound as the dispersant,while the color material with high transmittance used in the disclosedembodiments is in a state of being sufficiently dispersed. Therefore, acolor layer which shows higher luminance even after it undergoes thehigh-temperature heating of the color filter production step, can beformed.

<Urethane-Based Dispersant>

The urethane-based dispersant that is preferably used as the dispersant,is a dispersant composed of a compound containing one or more urethanebonds (—NH—COO—) per molecule.

Excellent dispersion is possible by the use of a small amount of theurethane-based dispersant. By making the amount of the dispersant small,the amount of a cure component, etc., can be relatively large. As aresult, a color layer with excellent heat resistance can be formed.

In the disclosed embodiments, the urethane-based dispersant ispreferably a reaction product of (1) polyisocyanates containing two ormore isocyanate groups per molecule and (2) one or more kinds selectedfrom polyesters containing a hydroxyl group at a single terminal or bothterminals thereof and poly(meth) acrylates containing a hydroxyl groupat a single terminal or both terminals thereof. The urethane-baseddispersant is more preferably a reaction product of (1) polyisocyanatescontaining two or more isocyanate groups per molecule, (2) one or morekinds selected from polyesters containing a hydroxyl group at a singleterminal or both terminals thereof and poly(meth) acrylates containing ahydroxyl group at a single terminal or both terminals thereof, and (3) acompound containing an active hydrogen and a basic or acidic group permolecule.

Commercially-available, urethane-based dispersants includeDISPERBYK-161, 162, 163, 164, 166, 167, 168, 170, 171, 174, 182, 183,184 and 185, and BYK-9077 (product names, manufactured by BYK Japan KK),AJISPER PB711 (product name, manufactured by Ajinomoto Co., Inc.) andEFKA-46, 47 and 48 (product names, manufactured by EFKA CHEMICALS). Ofthem, DISPERBYK-161, 162, 166, 170 and 174 are preferred from theviewpoint of heat resistance, electric reliability and dispersibility.

<Polymer Containing at Least One Selected from a Constitutional UnitRepresented by the Following General Formula (VI) and a ConstitutionalUnit Represented by the Following General Formula (VI′)>

In the disclosed embodiments, as the dispersant, the polymer containingat least one selected from a constitutional unit represented by thefollowing general formula (VI) and a constitutional unit represented bythe following general formula (VI′), can be preferably used. As thepolymer, a graft copolymer containing a constitutional unit representedby the following general formula (VII) and at last one selected from aconstitutional unit represented by the following general formula (VI)and a constitutional unit represented by the following general formula(VI′), or a block copolymer containing a block moiety that contains aconstitutional unit represented by the following general formula (VIII)and a block moiety that contains at least one selected from aconstitutional unit represented by the following general formula (VI)and a constitutional unit represented by the following general formula(VI′), can be particularly preferably used.

where L⁴¹ is a direct bond or a divalent linking group; R⁴¹ is ahydrogen atom or a methyl group; R⁴² is a hydrocarbon group or amonovalent group represented by —[CH(R⁴⁶)—CH(R⁴⁷)—O]_(x1)—R⁴⁸ or—[(CH₂)_(y1)—O]_(z1)—R⁴⁸; each of R⁴⁶ and R⁴⁷ is independently ahydrogen atom or a methyl group; R⁴⁸ is a hydrogen atom, a hydrocarbongroup, or a monovalent group represented by —CHO, —CH₂CHO, —CO—CH═CH₂,—CO—C(CH₃)═CH₂, or —CH₂COOR⁴⁹; R⁴⁹ is a hydrogen atom or an alkyl grouphaving 1 to 5 carbon atoms; the hydrocarbon group optionally contains asubstituent group; x1 is an integer of from 1 to 18; y1 is an integer offrom 1 to 5; and z1 is an integer of from 1 to 18;

where X⁺ is an organic cation;

where L⁴² is a direct bond or a divalent linking group; R⁴³ is ahydrogen atom or a methyl group; and “Polymer” is a polymer chaincontaining one or more selected from a constitutional unit representedby the following general formula (IX) and a constitutional unitrepresented by the following general formula (X); and where R⁴⁴ is ahydrogen atom or a methyl group; R⁴⁵ is a hydrocarbon group or amonovalent group represented by —[CH(R⁵⁰)—CH(R⁵¹)—O]_(x2)—R⁵²,—[(CH₂)_(y2)—O]_(z2)—R⁵², —[CO—(CH₂)_(y2)—O]_(z2)—R⁵², —CO—O—R^(52′) or—O—CO—R⁵²″; each of R⁵⁰ and R⁵¹ is independently a hydrogen atom or amethyl group; R⁵² is a hydrogen atom, a hydrocarbon group, or amonovalent group represented by —CHO, —CH₂CHO or —CH₂COOR⁵³; R^(52′) isa hydrocarbon group or a monovalent group represented by—[CH(R⁵⁰)—CH(R⁵¹)—O]_(x′)—R⁵², [(CH₂)_(y2′)—O]_(z2′)—R⁵², or—[CO—(CH₂)_(y2′)—O]_(z2′)—R⁵²; R^(52″) is an alkyl group having 1 to 18carbon atoms; R⁵³ is a hydrogen atom or an alkyl group having 1 to 5carbon atoms; the hydrocarbon group optionally contains a substituentgroup; each of x2 and x2′ is independently an integer of from 1 to 18;each of y2 and y2′ is independently an integer of from 1 to 5; and eachof z2 and z2′ is an integer of from 1 to 18:

where R⁵⁴ is a hydrogen atom or a methyl group; R⁵⁵ is a hydrocarbongroup or a monovalent group represented by—[CH(R⁵⁶)—CH(R⁵⁷)—O]_(x3)—R⁵⁸, —[(CH₂)_(y3)—O]_(z3)—R⁵⁸,—[CO—(CH₂)_(y3)—O]_(z3)—R⁵⁸, —CO—O—R⁵⁹, or —O—CO—R⁶⁰; each of R⁵⁶ andR⁵⁷ is a hydrogen atom or a methyl group; R⁵⁸ is a hydrogen atom, ahydrocarbon group, or a monovalent group represented by —CHO, —CH₂CHO or—CH₂COOR⁶¹; R⁵⁹ is a hydrocarbon group or a monovalent group representedby —[CH(R⁵⁶)—CH(R⁵⁷)—O]_(x4)—R⁵⁸, —[(CH₂)_(y4)—O]_(z4)—R⁵⁸ or—[CO—(CH₂)_(y4)—O]_(z4)—R⁵⁸; R⁶⁰ is an alkyl group having 1 to 18 carbonatoms; R⁶¹ is a hydrogen atom or an alkyl group having 1 to 5 carbonatoms; the hydrocarbon group optionally contains a substituent group;“m” is an integer of from 1 to 5; “n” and “n′” are each an integer offrom 5 to 200; each of x3 and x4 is independently an integer of from 1to 18; each of y3 and y4 is independently an integer of from 1 to 5; andeach of z3 and z4 is independently an integer of from 1 to 18.

L⁴¹ and L⁴² in the general formulae (VI), (VI′) and (VII) may be thesame as L in the general formula (V).

As the hydrocarbon group in the general formulae (VI), (VI′), (VIII) and(IX), examples include, but are not limited to, an alkyl group having 1to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, anaralkyl group and an aryl group.

The organic cation in the general formula (VI′) is an organic cation inwhich the cationic moiety includes a carbon atom. As the organic cation,examples include, but are not limited to, nitrogen-containing protonatedorganic cations such as imidazolium cation, pyridinium cation andammonium cation, sulfonium cations such as trialkylsulfonium cation, andphosphonium cations such as tetraalkylphosphonium cation.

As the polymer containing at least one selected from the constitutionalunit represented by the general formula (VI) and the constitutional unitrepresented by the general formula (VI′), a block copolymer and a graftcopolymer containing the structure described in WO2015/083426 areparticularly preferably used, from the viewpoint of the above-describedeffects.

As the polymer containing at least one selected from the constitutionalunit represented by the general formula (VI) and the constitutional unitrepresented by the general formula (VI′), a polymer which is a reactionproduct of a polymer containing at least one of an epoxy group and acyclic ether group in a side chain with an acidic phosphorus compoundand in which at least part of acidic phosphorus compound groups may besalt-forming groups, are preferably used from the viewpoint of theabove-described effects.

These dispersants can be used alone or in combination of two or morekinds.

In the color material dispersion liquid according to the disclosedembodiments, from the viewpoint of dispersibility, dispersion stabilityand film properties, generally, the content of the dispersant ispreferably in a range of from 1% by mass to 50% by mass, and morepreferably in a range of from 1% by mass to 20% by mass, with respect tothe total amount of the color material dispersion liquid.

(C) Solvent

In the disclosed embodiments, the solvent can be appropriately selectedfrom solvents which are unreactive with the components of the colormaterial dispersion liquid and the components of the below-describedcolor resin composition and which can dissolve or disperse them. As thesolvent, examples include, but are not limited to, organic solvents suchas alcohol-based solvents, ether alcohol-based solvents, ester-basedsolvents, ketone-based solvents, ether alcohol acetate-based solvents,ether-based solvents, aprotic amide-based solvents, lactone-basedsolvents, unsaturated hydrocarbon-based solvents and saturatedhydrocarbon-based solvents. Of them, ester-based solvents are preferredfrom the viewpoint of solubility upon dispersion and coating properties.

Preferred ester-based solvents include methyl methoxypropionate, ethylethoxypropionate, methoxy ethyl acetate, propylene glycol monomethylether acetate, 3-methoxy-3-methyl-1-butyl acetate, 3-methoxybutylacetate, methoxybutyl acetate, ethoxy ethyl acetate, ethyl cellosolveacetate, dipropylene glycol methyl ether acetate, propylene glycoldiacetate, 1,3-butylene glycol diacetate, cyclohexanol acetate,1,6-hexanediol diacetate, diethylene glycol monoethyl ether acetate, anddiethylene glycol monobutyl ether acetate, for example.

Of them, propylene glycol monomethyl ether acetate (PGMEA) is preferredfrom the point of view that it has a low risk to the human body and hasfast heat-drying properties although it has low volatility at aroundroom temperature. In this case, there is such an advantage that aspecial washing step is not needed when switching from a color resincomposition comprising conventional PGMEA.

These solvents can be used alone or in combination of two or more kinds.

The color material dispersion liquid according to the disclosedembodiments, is prepared by the use of the above-described solventgenerally in an amount of from 60% by mass to 85% by mass, with respectto the total amount of the color material dispersion liquid containingthe solvent. As the solvent amount decreases, the viscosity increasesand the dispersibility decreases. As the solvent amount increases, thecolor material concentration decreases and may result in a difficulty inachieving a target chromaticity coordinate after preparation of theresin composition.

(Other Components)

As needed, the color material dispersion liquid according to thedisclosed embodiments can further contain a color material other thanthe color material represented by the general formula (I), a dispersionassisting resin and other components.

The other color material can be added as needed, for the purpose ofcolor tone control. It can be selected from conventionally-known colormaterials, according to the purpose, and such color materials can beused alone or in combination of two or more kinds. The other colormaterial and its content are not particularly limited and can be thesame as the case of the below-described color resin composition, as longas the effects of the disclosed embodiments are not impaired.

As the dispersion assisting resin, examples include, but are not limitedto, an alkali soluble resin that will be mentioned below under “Colorresin composition”. The particles of the color material becomes lesslikely to contact with each other due to steric hindrance by the alkalisoluble resin, resulting in stabilization of particle dispersion, andthe particle dispersion stabilization effect may be effective inreducing the dispersant.

As the other components, examples include, but are not limited to, asurfactant, which is used to increase wettability, a silane couplingagent, which is used to increase adhesion properties, a defoaming agent,a cissing inhibitor, an antioxidant, an aggregation inhibitor and anultraviolet absorber.

(Method for Producing the Color Material Dispersion Liquid)

The color material dispersion liquid according to the disclosedembodiments can be prepared by the following method: the dispersant ismixed with the solvent, and the mixture is stirred to produce adispersant solution; the dispersant solution is mixed with the colormaterial and, as needed, other compound; and the mixture is dispersedwith a disperser, thereby preparing the color material dispersion liquidaccording to the disclosed embodiments. Also, the color materialdispersion liquid according to the disclosed embodiments can be preparedas follows: the color material and the dispersant are mixed with thesolvent and dispersed with a known disperser, thereby preparing thecolor material dispersion liquid according to the disclosed embodiments.

As the disperser used for the dispersion treatment, examples include,but are not limited to, roller mills such as a two-roller mill and athree-roller mill; ball mills such as a vibrating ball mill; paintconditioners; and bead mills such as a continuous disk type bead milland a continuous annular type bead mill. In the case of using a beadmill, as the dispersion condition, the diameter of the beads used ispreferably from 0.03 mm to 2.00 mm, and more preferably from 0.05 mm to1.00 mm.

In particular, a preparatory dispersion is carried out with 2.00 mmzirconia beads, which is a relatively large bead diameter, and then amain dispersion is further carried out with 0.10 mm zirconia beads,which is a relatively small bead diameter. It is preferable to carry outfiltration with a 0.10 μm to 2.00 μm membrane filter after thedispersion treatment.

The color material dispersion liquid according to the disclosedembodiments is preferably used as a preliminarily prepared product forpreparing the below-described color resin composition. That is, thecolor material dispersion liquid is such a color material dispersionliquid, that it is preliminarily prepared at a stage prior to preparingthe below-described color resin composition and the ratio of “the massof the color material component in the composition”/“the mass of thesolid content other than the color material component in thecomposition” is high. In particular, this ratio (“the mass of the colormaterial component in the composition”/“the mass of the solid contentother than the color material component in the composition” ratio) isgenerally 0.5 or more, and more preferably 1.0 or more. By mixing thecolor material dispersion liquid with at least a binder component, acolor resin composition with excellent dispersibility can be prepared.

The color material dispersion liquid according to the disclosedembodiments is preferably used for color filter applications. Of them,the color material dispersion liquid is preferably used for blue pixelapplications for color filters. Of them, the color material dispersionliquid is preferably used for color filter applications for high colorgamut displays.

2. Color Resin Composition

The color resin composition according to the disclosed embodiments is acolor resin composition comprising (A) a color material, (B) adispersant, (C) a solvent and (D) a binder component, wherein the colormaterial (A) contains a compound which is represented by the generalformula (I) and which contains one or more structures selected from thestructures (i) and (ii).

According to the disclosed embodiments, a color layer configured tosuppress color change during high-temperature heating, can be formed.

The color resin composition according to the disclosed embodimentscontains at least the color material (A), the dispersant (B), thesolvent (C) and the binder component (D). As needed, it can containother components, to the extent that does not impair the effects of thedisclosed embodiments.

Hereinafter, the components of the color resin composition according tothe disclosed embodiments, will be described in detail.

Some of the components are those that can be contained in the colormaterial dispersion liquid of the disclosed embodiments, and they willnot be described below, since they can be the same components as thosedescribed above under “1. Color material dispersion liquid”.

(D) Binder Component

To provide film-forming properties and surface adhesion properties, thecolor resin composition contains a binder component. Especially, toprovide sufficient hardness to coating films, the color resincomposition preferably contains a curable binder component. The curablebinder component is not particularly limited, and conventionally-knowncurable binder components that are used to form the color layers ofcolor filters, can be appropriately used.

As the curable binder component, examples include, but are not limitedto, one containing a photocurable binder component that contains aphotocurable resin, which is polymerizable and curable by visible light,ultraviolet, electron beam radiation, etc., and one containing athermosetting binder component that contains a thermosetting resin,which is polymerizable and curable by heating.

Developability is not required of the curable binder component, whencolor layers can be formed by attaching the color resin compositionselectively in a pattern onto a substrate (e.g., the ink-jet method). Inthis case, a known thermosetting or photosensitive binder component thatis used to form color layers by the ink-jet method, etc., can beappropriately used.

As the thermosetting binder, a combination of a compound containing twoor more thermosetting functional groups per molecule and a curing agentis generally used. In addition, a catalyst that can promote athermosetting reaction can be added. As the thermosetting functionalgroups, examples include, but are not limited to, an epoxy group, anoxetanyl group, an isocyanate group and an ethylenically unsaturatedbond. As the thermosetting functional groups, epoxy groups arepreferably used. As the thermosetting binder component, examplesinclude, but are not limited to, those mentioned in InternationalPublication No. WO2012/144521.

On the other hand, in the case of using a photolithography process toform color layers, a photosensitive binder component with alkalidevelopability is suitably used.

Hereinafter, photosensitive binder components will be explained.However, the curable binder component used in the disclosed embodimentsis not limited to them. Besides the below-described photosensitivebinder components, a thermosetting binder component that ispolymerizable and curable by heating, such as epoxy resin, can befurther used.

As the photosensitive binder components, examples include, but are notlimited to, a positive photosensitive binder component and a negativephotosensitive binder component. As the positive photosensitive bindercomponent, examples include, but are not limited to, those containing analkali soluble resin and an o-quinonediazide group-containing compound,which is a photosensitivity-imparting component.

On the other hand, as the negative photosensitive binder component,those containing at least an alkali soluble resin, a polyfunctionalmonomer and a photoinitiator, are suitably used.

In the color resin composition according to the disclosed embodiments,the negative photosensitive binder component is preferred, from thepoint of view that a pattern can be easily formed by a photolithographymethod, using existing processes.

Hereinafter, the alkali soluble resin, the polyfunctional monomer andthe photoinitiator, which constitute the negative photosensitive bindercomponent, will be explained in detail.

<Alkali Soluble Resin>

In the disclosed embodiments, the alkali soluble resin can beappropriately selected, as long as it contains an acidic group,functions as a binder resin, and is soluble in developers used forpattern formation, particularly preferably in an alkaline developer.

In the disclosed embodiments, the alkali soluble resin is preferably aresin containing a carboxyl group as the acidic group. As the resin,examples include, but are not limited to, acrylic copolymers containinga carboxyl group and epoxy (meth)acrylate resins containing a carboxylgroup. Of them, particularly preferred is one containing a carboxylgroup and, moreover, a photopolymerizable functional group such as anethylenically unsaturated group in a side chain thereof. This is becausethe hardness of the cured film thus formed is increased by containingthe photopolymerizable functional group. These acrylic copolymers andepoxy (meth)acrylate resins can be used in combination of two or morekinds.

An acrylic copolymer containing a carboxyl group is obtained bycopolymerizing a carboxyl group-containing ethylenically unsaturatedmonomer and an ethylenically unsaturated monomer.

The acrylic copolymer containing a carboxyl group can further contain aconstitutional unit containing an aromatic carbon ring. The aromaticcarbon ring functions as a component that imparts coatability to thecolor resin composition.

The acrylic copolymer containing a carboxyl group can further contain aconstitutional unit containing an ester group. The constitutional unitcontaining an ester group not only functions as a component thatsuppresses the alkali solubility of the color resin composition, butalso functions as a component that increases the solubility andre-solubility in solvents.

As the acrylic copolymer containing a carboxyl group, examples include,but are not limited to, those described in International Publication No.WO2012/144521. In particular, examples include, but are not limited to,copolymers obtained from a monomer containing no carboxyl group, such asmethyl (meth)acrylate and ethyl (meth)acrylate, with one or moreselected from (meth)acrylic acid and anhydrides thereof. Also, examplesinclude, but are not limited to, polymers obtained by introducing anethylenically unsaturated bond in the above copolymers by, for example,addition of an ethylenically unsaturated compound containing a reactivefunctional group such as a glycidyl group or hydroxyl group. In thedisclosed embodiments, however, the acrylic copolymer containing acarboxyl group is not limited to these examples.

Of these examples, the polymers obtained by introducing an ethylenicallyunsaturated bond in the above copolymers by, for example, addition of anethylenically unsaturated compound containing a glycidyl group orhydroxyl group, are particularly preferred from the point of view thatpolymerization with the below-described polyfunctional monomer ispossible upon exposure, and more stable color filters can be obtained.

The copolymerization ratio of the carboxyl group-containingethylenically unsaturated monomer in the carboxyl group-containingcopolymer, is generally from 5% by mass to 50% by mass, and preferablyfrom 10% by mass to 40% by mass. When the copolymerization ratio of thecarboxyl group-containing ethylenically unsaturated monomer is less than5% by mass, the solubility of the coating film thus obtained in alkalinedevelopers may be decreased, resulting in a difficulty, with patternformation. When the copolymerization ratio exceeds 50% by mass, upondevelopment with an alkaline developer, a pattern thus formed is likelyto come off of the substrate, or the pattern surface is likely to beroughened.

The mass average molecular weight of the carboxyl group-containingcopolymer is preferably in a range of from 1,000 to 500,000, and morepreferably in a range of from 3,000 to 200,000. When the mass averagemolecular weight is less than 1,000, there may be a remarkable decreasein binder function after curing. When the mass average molecular weightexceeds 500,000, upon development with an alkaline developer, patternformation may be difficult. The mass average molecular weight isobtained by gel permeation chromatography (GPC) as a standardpolystyrene equivalent.

The epoxy (meth)acrylate resin containing a carboxyl group is notparticularly limited. As the resin, an epoxy (meth)acrylate compoundobtained by reaction of an acid anhydride with a reaction product of anepoxy compound and an unsaturated group-containing monocarboxylic acid,is suitable.

The epoxy compound, the unsaturated group-containing monocarboxylic acidand the acid anhydride can be appropriately selected from known ones. Asthe epoxy compound, the unsaturated group-containing monocarboxylic acidand the acid anhydride, examples include, but are not limited to, thosedescribed in International Publication No. WO2012/144521. As each of theepoxy compound, the unsaturated group-containing monocarboxylic acid andthe acid anhydride, those mentioned above can be used alone or incombination of two or more kinds.

The alkali soluble resin used in the color resin composition can be onekind of alkali soluble resin or a combination of two or more kinds ofalkali soluble resins. The content of the alkali soluble resin isgenerally in a range of from 10 parts by mass to 1,000 parts by mass,and preferably in a range of from 20 parts by mass to 500 parts by mass,with respect to 100 parts by mass of the color material contained in thecolor resin composition. When the content of the alkali soluble resin istoo small, sufficient alkali developability may not be obtained. Whenthe content is too large, the ratio of the color material is relativelysmall, so that sufficient color density may not be obtained.

<Polyfunctional Monomer>

The polyfunctional monomer used in the color resin composition is notparticularly limited, as long as it is polymerizable with thebelow-described photoinitiator. As the polyfunctional monomer, acompound containing two or more ethylenically unsaturated double bondsis generally used. The polyfunctional monomer is preferably apolyfunctional (meth)acrylate containing two or more acryloyl ormethacryloyl groups.

Such a polyfunctional (meth)acrylate can be appropriately selected fromconventionally known ones. As the polyfunctional (meth)acrylate,examples include, but are not limited to, those mentioned inInternational Publication No. WO2012/144521. From the viewpoint ofsolvent resistance, the polyfunctional monomer is preferably apolyfunctional (meth)acrylate not containing an acidic group.

These polyfunctional (meth)acrylates can be used alone or in combinationof two or more kinds. When excellent photocurability (high sensitivity)is required of the color resin composition, the polyfunctional monomeris preferably one containing three (trifunctional) or more polymerizabledouble bonds, and preferably poly(meth) acrylates of trivalent or higherpolyalcohols and dicarboxylic acid-modified products thereof. Morespecifically, preferred are trimethylolpropane tri(meth)acrylate,pentaerythritol tri(meth)acrylate, succinic acid-modified products ofpentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate,dipentaerythritol tetra(meth)acrylate, dipentaerythritolpenta(meth)acrylate, succinic acid-modified products ofdipentaerythritol penta(meth)acrylate, dipentaerythritolhexa(meth)acrylate, tris(2-(meth)acryloyloxyethyl)phosphate andtris(2-(meth)acryloyloxypropyl)phosphate, for example.

The polyfunctional monomer used in the color resin compositionpreferably contains a phosphorus atom-containing polyfunctional monomer,from the point of view that a change in the chromaticity of the colormaterial represented by the general formula (I) after high-temperatureheating, is more suppressed, and a coating film with increased luminanceand increased solvent resistance is obtained.

In the disclosed embodiments, the phosphorus atom-containingpolyfunctional monomer may be a compound which contains a phosphorusatom and in which two or more polymerizable functional groups arecontained per molecule.

As the polymerizable functional groups contained in the phosphorusatom-containing polyfunctional monomer, examples include, but are notlimited to, a (meth)acryloyl group, a (meth)acrylamide group, a vinylgroup and an allyl group. In the disclosed embodiments, the(meth)acrylamide group is a group represented by the following generalformula: CH₂═CRCONR′— (where R is a hydrogen atom or a methyl group, andR′ is a hydrogen atom or an alkyl group). The R is preferably a hydrogenatom, from the viewpoint of having high sensitivity in photo-radicalpolymerization and increasing the heat resistance and solvent resistanceof the color layer. The R′ is preferably a hydrogen atom, from the pointof view that hydrogen bonds are formed to reinforce cross-linking,thereby increasing the heat resistance and solvent resistance of thecolor layer.

As the polymerizable functional groups, at least one of a (meth)acryloylgroup and a (meth)acrylamide group is preferred, from the viewpoint ofhaving high sensitivity in photo-radical polymerization, increasing theheat resistance and solvent resistance of the color layer, andincreasing pattern adhesion in alkali development. From the viewpoint ofsolubility in solvents, it is preferable that at least a (meth)acryloylgroup is contained.

As the phosphorus atom-containing polyfunctional monomer, a phosphorusatom-containing polyfunctional monomer not containing an acidic group,is preferably contained from the viewpoint of increasing solventresistance. When the phosphorus atom-containing polyfunctional monomerdoes not contain an acidic group, lower affinity for high polar solvent(e.g., NMP) is obtained. Therefore, it is estimated that solventpenetration can be further suppressed.

As the phosphorus atom-containing polyfunctional monomer, a phosphorusatom-containing polyfunctional monomer containing at least one selectedfrom the following structures (i) to (iii), is also preferred: (i) astructure containing a polyphosphate ester structure in which two ormore phosphorus atoms are bound by a —O— bond, (ii) a structurecontaining a phosphorus atom and a (meth)acrylamide group, and (iii) astructure containing a phosphorus atom and an isocyanurate group. In thecase of containing the polyphosphate ester structure in which two ormore phosphorus atoms are bound by a —O— bond, the content ratio of thephosphorus atoms increases, and the specific gravity of thepolyfunctional monomer is increased, thereby densely cross-linking thepolyfunctional monomer, or the number of the polymerizable functionalgroups can be increased, thereby densely cross-linking thepolyfunctional monomer. Therefore, it is estimated that solventpenetration can be further suppressed by the high-density crosslinkingreaction. In the case of containing a (meth)acrylamide group, hydrogenbonds are formed in the NH moiety to reinforce cross-linking. Therefore,it is estimated that solvent penetration can be further suppressed. Inthe case of containing an isocyanurate group, the molecules of thepolyfunctional monomer become rigid molecules; moreover, due to theinfluence of the hydrophobicity of the isocyanurate group, thesolubility of the polyfunctional monomer in solvents (e.g., NMP)decreases. Therefore, it is estimated that solvent penetration can befurther suppressed.

As the preferred phosphorus atom-containing polyfunctional monomer,examples include, but are not limited to, the phosphorus atom-containingpolyfunctional monomers described in International Publication No.WO2017/022790.

When the color resin composition contains the phosphorus atom-containingpolyfunctional monomer, the above-described effects are exerted.However, the color layer thus formed may have a tendency to have pooradhesion to the substrate. Meanwhile, in the case of containing thephosphorus atom-containing polyfunctional monomer in combination withthe polymer containing at least one selected from the constitutionalunit represented by the general formula (VI) and the constitutional unitrepresented by the general formula (VI′), the phosphoric acid group isintroduced in the color resin composition, and the adhesion between thecolor layer and a substrate is increased. Therefore, a decrease inadhesion to the substrate can be suppressed.

For the polyfunctional monomer used in the color resin composition ofthe disclosed embodiments, the total content ratio of the phosphorusatom-containing polyfunctional monomer is preferably from 20% by mass to70% by mass of the total amount of the polyfunctional monomer, and morepreferably from 30% by mass to 60% by mass.

The content of the polyfunctional monomer used in the color resincomposition is not particularly limited. It is generally in a range offrom about 5 parts by mass to about 500 parts by mass, and preferably ina range of from 20 parts by mass to 300 parts by mass, with respect to100 parts by mass of the alkali soluble resin. When the content of thepolyfunctional monomer is smaller than the range, photocuring may notproceed sufficiently and the color resin composition exposed to lightmay be dissolved. When the content of the polyfunctional monomer islarger than the range, there may be a decrease in alkali developability.

<Photoinitiator>

The photoinitiator used in the color resin composition is notparticularly limited. As the photoinitiator, various kinds ofconventionally-known photoinitiators can be used alone or in combinationof two or more kinds. As the photoinitiator, examples include, but arenot limited to, those mentioned in International Publication No.WO2012/144521.

The content of the photoinitiator used in the color resin composition isgenerally from about 0.01 part by mass to about 100 parts by mass, andpreferably from 5 parts by mass to 60 parts by mass, with respect to 100parts by mass of the polyfunctional monomer. When the content is smallerthan the range, sufficient polymerization reaction may not be caused, sothat the hardness of the color layer may not be sufficient. When thecontent is larger than the range, the content of the color material andso on in the solid content of the color resin composition is relativelysmall, so that sufficient color density may not be obtained.

(Optionally-Added Components)

As needed, the color resin composition of the disclosed embodiments canfurther contain other color material or various kinds of additives.

(Other Color Material)

Other color material is added as needed, for the purpose of color tonecontrol. The color material contained in the color resin composition ofthe disclosed embodiments contains the color material represented by thegeneral formula (I) as an essential component. For color tone control,the color material represented by the general formula (I) may be used incombination with other color material.

The other color material is not particularly limited, as long as athus-formed color layer of a color filter can form a desired color. Asthe other color material, various kinds of organic pigments, inorganicpigments and dispersible dyes may be used alone or in combination of twoor more kinds. Of them, organic pigments are preferred due to their highcolor-forming properties and high heat resistance. For example, organicpigments include, but are not limited to, compounds classified intopigments in the Color Index (C.I.) published by the Society of Dyers andColourists, and compounds with color index numbers (C.I. numbers). Morespecifically, examples include those provided above as the examples ofthe other color material under “1. Color material dispersion liquid”.

A dispersible dye obtained by making a dye insoluble in solvents byintroducing various kinds of substituent groups in the dye or by aconventionally-known laking (salt-forming) method, or a dispersible dyeobtained by using a dye in combination with a solvent of low solubility,can be used. By using such a dispersible dye in combination with theabove-described dispersant, the dispersibility and dispersion stabilityof the dye can be increased.

The dispersible dye can be appropriately selected fromconventionally-known dyes. As the dye, examples include, but are notlimited to, azo dye, metal complex salt azo dye, anthraquinone dye,triphenylmethane dye, xanthene dye, cyanine dye, naphthoquinone dye,quinonimine dye, methine dye and phthalocyanine dye.

The amount of the color material used is not particularly limited, aslong as it is in a range that does not impair the effects of the presentdisclosure. For the amount of the color material used, for example, themass ratio of the color material represented by the general formula (I)to the other color material is preferably from 100:0 to 40:60, and morepreferably from 95:5 to 60:40. This is because, as long as the massratio is in the range, color tone control is possible without impairingthe high transmittance property of the color material represented by thegeneral formula (I).

(Additives)

As the additives, examples include, but are not limited to, apolymerization inhibitor, a chain transfer agent, a leveling agent, aplasticizer, a surfactant, a defoaming agent, a silane coupling agent,an ultraviolet absorber and an adhesion enhancing agent.

As the surfactant and the plasticizer, examples include, but are notlimited to, those mentioned in International Publication No.WO2012/144521.

(The Content of Each Component in the Color Resin Composition)

The total content of the color material represented by the generalformula (I) and the color material added as needed, is preferably from5% by mass to 65% by mass, and more preferably from 8% by mass to 55% bymass, with respect to the total solid content of the color resincomposition. When the total content of the color material is too small,a film obtained by applying the color resin composition to apredetermined thickness (generally from 1.0 μm to 5.0 μm) may obtaininsufficient transmission density. When the total content of the colormaterial is too large, the cured film obtained by applying the colorresin composition to a substrate and curing the applied color resincomposition, may obtain insufficient film properties (e.g., adhesion tothe substrate, surface roughness of the cured film, and coating filmhardness). In addition, since the ratio of the amount of the dispersantused to disperse the color materials in the color resin composition,becomes large, the cured film may obtain insufficient properties (e.g.,solvent resistance). In the disclosed embodiments, “solid content”includes all of the above-described components other than the solvent,and it also includes the polyfunctional monomer dissolved in thesolvent.

Also, the content of the dispersant is not particularly limited, as longas the color material can be homogeneously dispersed. For example, thedispersant content may be from 10 parts by mass to 150 parts by mass,with respect to 100 parts by mass of the color material. Also, thecontent is preferably from 15 parts by mass to 100 parts by mass, andparticularly preferably from 15 parts by mass to 70 parts by mass, withrespect to 100 parts by mass of the color material. The total dispersantcontent is preferably in a range of from 1% by mass to 60% by mass,particularly preferably in a range of from 5% by mass to 50% by mass,with respect to the total solid content of the color resin composition.When the content is less than 1% by mass with respect to the total solidcontent of the color resin composition, homogeneous color materialdispersion may be difficult. When the content is more than 60% by mass,a decrease in curability and developability may occur.

The total amount of the binder component is preferably from 5% by massto 90% by mass, and more preferably from 10% by mass to 80% by mass,with respect to the total solid content of the color resin composition.

The content of the solvent is not particularly limited, as long asaccurate color layer formation is possible. In general, the content ispreferably in a range of from 65% by mass to 95% by mass, andparticularly preferably in a range of from 75% by mass to 88% by mass,with respect to the total amount of the color resin compositionincluding the solvent. When the content of the solvent is in the range,excellent coatability can be provided to the color resin composition.

(Method for Producing the Color Resin Composition)

As the method for producing the color resin composition, examplesinclude, but are not limited to, the following methods (1) and (2): (1)the color material dispersion liquid according to the disclosedembodiments, the binder component, and various kinds of additionalcomponents used as needed, are added to the solvent at the same time andmixed together, and (2) the binder component and various kinds ofadditional components used as needed, are added to the solvent and mixedtogether; the color material dispersion liquid according to thedisclosed embodiments is added thereto; and then they are mixedtogether.

(Cured Film of Color Resin Composition)

For the color resin composition according to the disclosed embodiments,a difference Δx (=x₁−x₀) between a chromaticity coordinate x₀ of a curedfilm ₍₀₎ obtained by drying the color resin composition and heating thedried color resin composition at 230° C. for 30 minutes to a thicknessat which a chromaticity coordinate y₀ is 0.082, and a chromaticitycoordinate x₁ of a cured film ₍₁₎ obtained by repeating, three times, aprocess of heating the cured film ₍₀₎ at 230° C. for 30 minutes and thenleaving the heated cured film ₍₀₎ to cool for 30 minutes, is preferably0.025 or less, more preferably 0.020 or less, and still more preferably0.010 or less, from the viewpoint of suppressing a color change afterheating.

The chromaticity coordinates x and y are chromaticity coordinates in theXYZ color system by JIS Z8701, which are values measured underilluminant C.

The color resin composition according to the disclosed embodiments ispreferably used for color filter applications. Of them, it is preferablyused for blue pixel applications for color filters. Of them, it ispreferably used for color filter applications for high color gamutdisplays.

Next, the color filter of the disclosed embodiments will be described.

[Color Filter]

The color filter according to the disclosed embodiments is a colorfilter comprising at least a transparent substrate and color layersdisposed on the substrate, wherein at least one of the color layerscontains a compound which is represented by the general formula (I) andwhich contains one or more structures selected from the structures (i)and (ii).

Such a color filter of the disclosed embodiments will be explained withreference to figures. FIG. 1 is a schematic sectional view of anembodiment of a color filter. According to FIG. 1, a color filter 10,which is an embodiment of the present disclosure, includes a transparentsubstrate 1, a light shielding part 2 and a color layer 3.

(Color Layer)

At least one of the color layers used in the color filter according tothe disclosed embodiments, is a color layer that contains theabove-specified compound represented by the general formula (I).

The color layers are generally formed on openings of the light shieldingpart on the below-described transparent substrate and composed of colorpatterns in three or more colors.

The arrangement of the color layers is not particularly limited and canbe a general arrangement such as a stripe type, a mosaic type, atriangle type or a four-pixel arrangement type. The width, area, etc.,of the color layer can be determined appropriately.

The thickness of the color layers is appropriately controlled bycontrolling the applying method or the solid content concentration,viscosity, etc., of the color resin composition. In general, thethickness is preferably in a range of from 1 μm to 5 μm.

For example, when the color resin composition is a photosensitive resincomposition, the color layer can be formed by the following method. Itis preferable that the color layer containing the above-specifiedcompound represented by the general formula (I), which is used in thecolor filter, is formed by use of the color resin composition whichcontains the color material, the dispersant, the solvent and the bindercomponent, the color material containing the above-specified compoundrepresented by the general formula (I). It is also preferable that thecolor layer containing the above-specified compound represented by thegeneral formula (I), is a cured product of the color resin composition.

First, the color resin composition is applied onto the below-describedtransparent substrate by a coating method such as a spray coatingmethod, a dip coating method, a bar coating method, a roll coatingmethod, a spin coating method or the like to form a wet coating film.

Then, the wet coating film is dried with a hot plate, an oven, etc. Thedried film is subjected to exposure through a mask with a given patternto cause a photopolymerization reaction of the alkali soluble resin, thepolyfunctional monomer, etc., thereby obtaining a photosensitive coatingfilm. A light source is used for the exposure. As the light source,examples include, but are not limited to, ultraviolet rays from a lowpressure mercury lamp, a high pressure mercury lamp and a metal halidelamp, and electron beams. The exposure amount is appropriatelycontrolled, depending on the used light source and the thickness of thecoating film.

The film can be heated to promote a polymerization reaction after theexposure. The heating condition is appropriately determined, dependingon the content ratio of the components used in the color resincomposition, the thickness of the coating film, etc.

Next, the thus-obtained film is developed with a developer to dissolveand remove unexposed portions, thereby forming a coating film in adesired pattern. As the developer, a solution obtained by dissolvingalkali in water or aqueous solvent, is generally used. An appropriateamount of surfactant, etc., can be added to the alkali solution. Thedeveloping method can be selected from general developing methods.

After the developing treatment, generally, the developer is rinsed off,followed by drying of the cured coating film of the color resincomposition, thereby forming a color layer. To sufficiently cure thecoating film, a heating treatment can be carried out after thedeveloping treatment. The heating condition is not particularly limitedand is appropriately determined depending on the intended application ofthe coating film.

Out of the color layers, the color layer containing the compound whichis represented by the above-specified general formula (I) preferably hasthe following visible light transmission spectrum, from the viewpoint ofobtaining a color filter with higher luminance: the maximumtransmittance at 400 nm or more and 500 nm or less is 86% or more; theminimum transmittance at 550 nm or more and 650 nm or less is 2% orless; and the wavelength indicating the maximum transmittance at 400 nmor more and 500 nm or less, is in a range of from 425 nm to 455 nm.

The visible light transmission spectrum of the color layer containingthe compound represented by the above-specified general formula (I), ismore preferably as follows: the maximum transmittance at 400 nm or moreand 500 nm or less is 87% or more; the minimum transmittance at 550 nmor more and 650 nm or less is 0.2% or less; and the wavelengthindicating the maximum transmittance at 400 nm or more and 500 nm orless, is in a range of from 430 nm to 455 nm.

The visible light transmission spectrum of the color layer can bemeasured by a microscopic spectrophotometer (e.g., OSP-SP200manufactured by Olympus Corporation).

(Light Shielding Part)

In the color filter according to the disclosed embodiments, the lightshielding part is formed in pattern on the below-described transparentsubstrate, and it can be the same as those used in general colorfilters.

The pattern shape of the light shielding part is not particularlylimited. As the pattern shape, examples include, but are not limited to,a stripe-shaped pattern and a matrix-shaped pattern. As the lightshielding part, examples include, but are not limited to, one producedby dispersing or dissolving a black pigment in a binder resin, and thinmetal layers of chromium, chromium oxide, etc. When the light shieldingpart is such a thin metal layer, the layer can be a stack of two layersof one CrO_(x) layer (x is an arbitrary number) and one Cr layer, or itcan be a stack of three layers of one CrO_(x) layer (x is an arbitrarynumber), one CrN_(y) layer (y is an arbitrary number) and one Cr layer,the stack of the three layers having a further reduced reflectance.

When the light shielding part is one produced by dispersing ordissolving a black color material in a binder resin, the method forproducing the light shielding part is not particularly limited, as longas it is a method that can pattern the light shielding part. As themethod, examples include, but are not limited to, a photolithographymethod using a color resin composition for the light shielding part, aprinting method using the same, and an ink-jet method using the same.

When the light shielding part is a thin metal layer, the thickness isfrom about 0.2 μm to about 0.4 When the light shielding part is formedfrom the black color material dispersed or dissolved in the binderresin, the thickness is from about 0.5 μm to about 2 μm.

(Transparent Substrate)

The transparent substrate of the color filter according to the disclosedembodiments, is not particularly limited, as long as it is a substratethat is transparent to visible light. It can be selected from generaltransparent substrates used in color filters. As the transparentsubstrate, examples include, but are not limited to, inflexibletransparent rigid materials such as silica glass plate, non-alkali glassplate and synthetic silica plate, and transparent flexible materialswith flexibility and flexible properties, such as transparent resinfilm, optical resin plate and flexible glass.

The thickness of the transparent substrate is not particularly limited.Depending on the intended application of the color filter, one with athickness of from about 50 μm to about 1 mm can be used, for example.

In addition to the transparent substrate, the light shielding part andthe color layer, the color filter according to the disclosed embodimentscan also include an overcoat layer and a transparent electrode layer,for example. Moreover, the color filter according to the disclosedembodiments can include an orientation film for orienting a liquidcrystal material, a columnar spacer, etc. The color filter according tothe disclosed embodiments is not limited to the above-exemplifiedstructure. A known structure that is generally used for a color filtercan be appropriately selected.

[Liquid Crystal Display Device]

The liquid crystal display device according to the disclosed embodimentsis a liquid crystal display device comprising the color filter accordingto the disclosed embodiments, a counter substrate, and a liquid crystallayer disposed between the color filter and the counter substrate.

Such a liquid crystal display device according to the disclosedembodiments will be explained with reference to a figure. FIG. 2 is aschematic view of an embodiment of a liquid crystal display device. Asshown in FIG. 2, a liquid crystal display device 40 includes a colorfilter 10, a counter substrate 20 including a TFT array substrate, etc.,and a liquid crystal layer 15 formed between the color filter 10 and thecounter substrate 20. Such an example is shown in FIG. 2, that anexample an orientation film 13 a is formed on a color layer 3 side ofthe color filter 10; an orientation film 13 b is formed on a countersubstrate 20 side of the same; and the liquid crystal layer 15 is formedbetween the two orientation films 13 a and 13 b. In addition, such anexample is shown in FIG. 2, that the liquid crystal display device 40includes a polarization plate 25 a disposed outside the color filter 10,a polarization plate 25 b disposed outside the counter substrate 20, anda backlight 30 disposed on the outer side than the polarization plate 25b disposed on the counter substrate 20 side of the liquid crystaldisplay device 40.

The liquid crystal display device according to the disclosed embodimentsis not limited to the configuration shown in FIG. 2. It can be aconfiguration that is generally known as a liquid crystal display deviceincluding a color filter.

The method for driving the liquid crystal display device according tothe disclosed embodiments is not particularly limited. It can beselected from driving methods that are generally used in liquid crystaldisplay devices. As such driving methods, examples include, but are notlimited to, a TN method, an IPS method, an OCB method and an MVA method.In the disclosed embodiments, any of these methods can be suitably used.

The counter substrate can be appropriately selected, depending on thedriving method, etc., of the liquid crystal display device according tothe disclosed embodiments.

Also, the liquid crystal constituting the liquid crystal layer can beselected from various liquid crystals with varying dielectricanisotropies and mixtures thereof, depending on the driving method,etc., of the liquid crystal display device according to the disclosedembodiments.

The method for forming the liquid crystal layer can be selected frommethods that are generally used to produce liquid crystal cells. As themethod, examples include, but are not limited to, a vacuum injectionmethod and a liquid crystal dripping method.

In the vacuum injection method, for example, a liquid crystal cell isproduced in advance, using a color filter and a counter substrate;liquid crystal is heated to become isotropic liquid; the liquid crystalis injected into the liquid crystal cell, while it is in the form ofisotropic liquid, using the capillary effect; and the liquid crystalcell is encapsulated with an adhesive agent, thereby forming a liquidcrystal layer. Then, the encapsulated liquid crystal can be oriented bygradually cooling the liquid crystal cell to room temperature.

In the dripping method, for example, a sealing agent is applied to theperiphery of a color filter; the color filter is heated to thetemperature at which the liquid crystal enters an isotropic phase; theliquid crystal is dripped with a dispenser or the like, while it is inthe form of isotropic liquid; and the color filter and the countersubstrate are stacked under reduced pressure and attached to each othervia the applied sealing agent, thereby forming a liquid crystal layer.Then, the encapsulated liquid crystal can be oriented by graduallycooling the liquid crystal cell to room temperature.

The backlight used in the liquid crystal display device according to thedisclosed embodiments, can be appropriately selected depending on theintended application of the liquid crystal display device. As thebacklight, examples include, but are not limited to, a backlight unitusing a cold cathode fluorescent lamp (CCFL), a white LED or a whiteorganic EL as a light source.

As the white LED, examples include, but are not limited to, a white LEDthat obtains white light by color mixing of a red LED, a green LED and ablue LED; a white LED that obtains white light by color mixing of a blueLED, a red LED and a green phosphor; a white LED that obtains whitelight by color mixing of a blue LED, a red-emitting phosphor and agreen-emitting phosphor; a white LED that obtains white light by colormixing of a blue LED and a YAG phosphor; and a white LED that obtainswhite light by color mixing of a UV LED, a red-emitting phosphor, agreen-emitting phosphor and a blue-emitting phosphor. As the phosphors,quantum dots can be used.

[Light-Emitting Display Device]

The light-emitting display device according to the disclosed embodimentscomprises the above-described color filter according to the disclosedembodiments and a light-emitting body. As the light-emitting displaydevice according to the disclosed embodiments, examples include, but arenot limited to, an organic light-emitting display device comprising anorganic light-emitting body as the light-emitting body. Thelight-emitting body is not limited to the organic light-emitting body,and an inorganic light-emitting body can be appropriately used.

Such a light-emitting display device of the disclosed embodiments willbe explained with reference to a figure. FIG. 3 is a schematic view ofan embodiment of a light-emitting display device. As shown in FIG. 3, alight-emitting display device 100, which is the light-emitting displaydevice according to the disclosed embodiments, includes a color filter10 and a light-emitting body 80. An organic protection layer 50 and/oran inorganic oxide layer 60 can be disposed between the color filter 10and the light-emitting body 80.

As the method for stacking the components of the light-emitting body 80,examples include, but are not limited to, a method of stacking atransparent positive electrode 71, a positive hole injection layer 72, apositive hole transport layer 73, a light-emitting layer 74, an electroninjection layer 75 and a negative electrode 76 in this sequence on thecolor filter, and a method of attaching the light-emitting body 80formed on a different substrate onto the inorganic oxide layer 60. Thetransparent positive electrode 71, the positive hole injection layer 72,the positive hole transport layer 73, the light-emitting layer 74, theelectron injection layer 75, the negative electrode 76 and othercomponents of the light-emitting body 80 can be appropriately selectedfrom conventionally-known materials. The light-emitting display device100 produced as mentioned above is applicable to both passive and activedrive organic EL displays, for example.

The light-emitting display device according to the disclosedembodiments, is not limited to a light-emitting display device of theconfiguration shown in FIG. 3. It can include any one of configurationsthat are generally known as those of light-emitting display devicesusing a color filter.

EXAMPLES Synthesis Example 1: Synthesis of Intermediate A-1

First, 15.2 g (60 mmol) of 1-iodonaphthalene (manufactured by Wako PureChemical Industries, Ltd.), 6.31 g (30 mmol) of 4,4′-methylenebis(cyclohexylamine) (manufactured by Tokyo Chemical Industry Co.,Ltd.), 8.07 g (84 mmol) of sodium t-butoxide, 0.09 g (0.2 mmol) of2-dicyclohexylphosphino-2′,6′,-dimethoxybiphenyl (manufactured byAldrich), and 0.021 g (0.1 mmol) of palladium acetate (manufactured byWako Pure Chemical Industries, Ltd.) were dispersed in 30 mL of xyleneand reacted at 130° C. to 135° C. for 48 hours. After the reaction wascompleted, the reaction product was cooled to room temperature and mixedwith water for extraction. Next, the product thus obtained was driedwith magnesium sulfate and concentrated, thereby obtaining the followingintermediate A-1 in an amount of 8.5 g (yield 70%).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 407 (M+H),    -   Elemental analysis values: CHN measurement values (85.47%,        8.02%, 6.72%); theoretical values (85.26%, 8.11%, 6.63%)

Synthesis Example 2: Synthesis of Intermediate A-2

The following intermediate A-2 was obtained (yield 94%) in the samemanner as Synthesis Example 1, except that mmol of 4,4′-methylenebis(2-methylcyclohexylamine) (manufactured by Tokyo Chemical IndustryCo., Ltd.) was used in place of the 4,4′-methylene bis(cyclohexylamine).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 491 (M+H)    -   Elemental analysis values: CHN measurement values (85.72%,        8.53%, 5.75%); theoretical values (85.66%, 8.63%, 5.71%)

Synthesis Example 3: Synthesis of Intermediate A-3

The following intermediate A-3 was obtained (yield 72%) in the samemanner as Synthesis Example 1, except that 30 mmol of 4,4′-methylenebis(2,6-dimethylcyclohexylamine) (CAS No. 65962-45-0) was used in placeof the 4,4′-methylene bis(cyclohexylamine).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 519 (M+H)    -   Elemental analysis values: CHN measurement values (85.75%,        8.86%, 5.39%); theoretical values (85.66%, 8.94%, 5.40%)

Synthesis Example 4: Synthesis of Intermediate A-4

The following intermediate A-4 was obtained (yield 70%) in the samemanner as Synthesis Example 1, except that 30 mmol of norbornane diamine(NBDA) (CAS No. 56602-77-8) (manufactured by Mitsui Chemicals, Inc.) wasused in place of the 4,4′-methylene bis(cyclohexylamine).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (EST) (m/z): 407 (M+H),    -   Elemental analysis values: CHN measurement values (85.47%,        8.02%, 6.72%); theoretical values (85.26%, 8.11%, 6.63%)

Synthesis Example 5: Synthesis of Intermediate B-1

First, 15.0 g (59.7 mmol) of 4,4′-dichlorobenzophenone (manufactured byWako Pure Chemical Industries, Ltd.), 16.3 g (121 mmol) ofN-ethyl-o-toluidine (manufactured by Wako Pure Chemical Industries,Ltd.), 16.1 g (168 mmol) of sodium t-butoxide, 2.86 g (6.0 mmol) of2-dicyclohexylphosphino-2′,4′,6′,-triisopropylbiphenyl (Xphos)(manufactured by Johnson Matthey), and 673 mg (3.0 mmol) of palladiumacetate (manufactured by Wako Pure Chemical Industries, Ltd.) weredispersed in 130 mL of xylene and reacted at 100° C. to 105° C. for 20hours. After the reaction was completed, the reaction product was cooledto room temperature and mixed with 200 ml of toluene and 200 ml of waterfor extraction. A toluene solution thus obtained was dried withmagnesium sulfate and then concentrated under reduced pressure. Aresidue thus obtained was diluted with toluene and refined by silica-gelcolumn chromatography, thereby obtaining the following intermediate B-1in an amount of 11.8 g (yield 44%).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 449 (M+H),    -   Elemental analysis values: CHN measurement values (82.90%,        7.33%, 6.22%); theoretical values (82.81%, 7.40%, 6.23%)

Synthesis Example 6: Synthesis of Intermediate B-2

The following intermediate B-2 was obtained (yield 52%) in the samemanner as Synthesis Example 5, except that N-ethyl-2,6-dimethylanilinewas used in place of the N-ethyl-o-toluidine (manufactured by Wako PureChemical Industries, Ltd.)

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 477 (M+H),    -   Elemental analysis values: CHN measurement values (83.23%,        7.55%, 5.84%); theoretical values (83.15%, 7.61%, 5.88%)

Synthesis Example 7: Synthesis of Intermediate B-3

The following intermediate B-3 was obtained (yield 51%) in the samemanner as Synthesis Example 5, except thatN-ethyl-2,4,6-trimethylaniline was used in place of theN-ethyl-o-toluidine (manufactured by Wako Pure Chemical Industries,Ltd.)

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 505 (M+H),    -   Elemental analysis values: CHN measurement values (83.39%,        7.91%, 5.54%); theoretical values (83.29%, 7.99%, 5.55%)

Synthesis Example 8: Synthesis of Intermediate B-4

The following intermediate B-4 was obtained (yield 71%) in the samemanner as Synthesis Example 5, except thatN-ethyl-2-methylcyclohexylamine was used in place of theN-ethyl-o-toluidine (manufactured by Wako Pure Chemical Industries,Ltd.)

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 461 (M+H),    -   Elemental analysis values: CHN measurement values (80.89%,        9.60%, 6.05%); theoretical values (80.82%, 9.63%, 6.08%)

Synthesis Example 9: Synthesis of Compound 1-1

First, 2.47 g (6.08 mmol) of the intermediate A-4 obtained in SynthesisExample 4, 6.00 g (13.4 mmol) of the intermediate B-1 obtained inSynthesis Example 5, and 10 mL of chlorobenzene were mixed and stirredat 45° C. to 50° C. Then, 2.06 g (13.4 mmol) of phosphorus oxychloride(manufactured by Wako Pure Chemical Industries, Ltd.) was added theretoin a dropwise manner. The mixture was stirred at 45° C. to 50° C. for 20hours. After a reaction was completed, 100 ml of chloroform and 100 mLof water were added to dissolve the reacted mixture. A chloroform layerthus formed was separated therefrom, washed with water, dried withmagnesium sulfate and then concentrated under reduced pressure. Aresidue thus obtained was diluted with chloroform and refined bysilica-gel column chromatography, thereby obtaining the followingcompound 1-1 in an amount of 7.5 g (yield 91%).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 635 (+), divalent    -   Elemental analysis values: CHN measurement values (81.59%,        6.85%, 5.25%); theoretical values (81.53%, 6.92%, 5.29%)

Synthesis Example 10: Synthesis of Compound 1-2

The following compound 1-2 was obtained (yield 82%) in the same manneras Synthesis Example 9, except that the intermediate A-1 of SynthesisExample 1 was used in place of the intermediate A-4.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 663(+), divalent    -   Elemental analysis values: CHN measurement values (81.75%,        7.17%, 5.99%); theoretical values (81.69%, 7.22%, 6.02%)

Synthesis Example 11: Synthesis of Compound 1-3

The following compound 1-3 was obtained (yield 87%) in the same manneras Synthesis Example 9, except that the intermediate A-2 of SynthesisExample 2 was used in place of the intermediate A-4.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

MS (ESI) (m/z): 677(+), divalent

Elemental analysis values: CHN measurement values (81.81%, 7.31%,5.85%); theoretical values (81.77%, 7.36%, 5.90%)

Synthesis Example 12: Synthesis of Compound 1-4

The following compound 1-4 was obtained (yield 52%) in the same manneras Synthesis Example 9, except that the intermediate A-1 of SynthesisExample 1 was used in place of the intermediate A-4, and4,4′-bis(diethylamino)benzophenone (manufactured by Tokyo ChemicalIndustry Co., Ltd.) was used in place of the intermediate B-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 538(+), divalent    -   Elemental analysis values: CHN measurement values (73.51%,        8.02%, 7.28%); theoretical values (78.43%, 8.07%, 7.32%)

Synthesis Example 13: Synthesis of Compound 1-5

The following compound 1-5 was obtained (yield 65%) in the same manneras Synthesis Example 9, except that the intermediate A-2 of SynthesisExample 2 was used in place of the intermediate A-4, and4,4′-bis(diethylamino)benzophenone (manufactured by Tokyo ChemicalIndustry Co., Ltd.) was used in place of the intermediate B-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 552(+), divalent    -   Elemental analysis values: CHN measurement values (78.68%,        8.17%, 7.10%); theoretical values (78.61%, 8.22%, 7.14%)

Synthesis Example 14: Synthesis of Compound 1-6

The following Synthesis Example 9 was obtained (yield 76%) in the samemanner as Example 1-1, except that the intermediate A-3 of SynthesisExample 3 was used in place of the intermediate A-4.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 691(+), divalent    -   Elemental analysis values: CHN measurement values (81.91%,        7.44%, 5.72%); theoretical values (81.84%, 7.49%, 5.78%)

Synthesis Example 15: Synthesis of Compound 1-7

The following compound 1-7 was obtained (yield 81%) in the same manneras Synthesis Example 9, except that the intermediate A-1 of SynthesisExample 1 was used in place of the intermediate A-4, and theintermediate B-2 of Synthesis Example 6 was used in place of theintermediate B-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 691(+), divalent    -   Elemental analysis values: CHN measurement values (81.90%,        7.44%, 5.74%); theoretical values (81.84%, 7.49%, 5.78%)

Synthesis Example 16: Synthesis of Compound 1-8

The following compound 1-8 was obtained (yield 73%) in the same manneras Synthesis Example 9, except that the intermediate A-1 of SynthesisExample 1 was used in place of the intermediate A-4, and theintermediate B-3 of Synthesis Example 7 was used in place of theintermediate B-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 719(+), divalent    -   Elemental analysis values: CHN measurement values (81.97%,        7.55%, 5.65%); theoretical values (81.91%, 7.62%, 5.67%)

Synthesis Example 17: Synthesis of Compound 1-9

The following compound 1-9 was obtained (yield 71%) in the same manneras Synthesis Example 9, except that the intermediate A-1 of SynthesisExample 1 was used in place of the intermediate A-4, and theintermediate B-4 of Synthesis Example 8 was used in place of theintermediate B-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 675(+), divalent    -   Elemental analysis values: CHN measurement values (80.38%,        8.73%, 5.85%); theoretical values (80.30%, 8.80%, 5.91%)

Comparative Synthesis Example 1: Synthesis of Compound 1-X

First, 8.46 g (20.8 mmol) of the intermediate A-4 of Synthesis Example4, 13.5 g (41.6 mmol) of 4,4′-bis(dimethylamino)benzophenone(manufactured by Tokyo Chemical Industry Co., Ltd.) and 60 mL of toluenewere mixed and stirred at 45° C. to 50° C. Then, 6.38 g (51.5 mmol) ofphosphorus oxychloride (manufactured by Wako Pure Chemical Industries,Ltd.) was added thereto in a dropwise manner. The mixture was refluxedfor two hours and cooled down. After a reaction was completed, thetoluene was decanted. A resinous precipitate thus obtained was mixedwith concentrated hydrochloric acid, 40 mL of chloroform and 40 mL ofwater and dissolved. A chloroform layer thus formed was separatedtherefrom, washed with water, and then dried with magnesium sulfate andconcentrated. A concentrate thus obtained was mixed with 65 mL of ethylacetate and refluxed. After cooling the resultant product, a precipitatethus formed was obtained by filtration, thereby obtaining the followingcompound 1-X in an amount of 15.9 g (yield 70%).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   MS (ESI) (m/z): 511(+), divalent    -   Elemental analysis values: CHN measurement values (78.13%,        7.48%, 7.78%); theoretical values (78.06%, 7.75%, 7.69%)

Synthesis Example 18: Synthesis of Compound 2-1

First, 2.59 g (0.76 mmol) of 12-tungstophosphoric acid n-hydrate(manufactured by Kanto Chemical Co., Inc.) was dissolved in a mixedsolution of 40 mL of methanol and 40 mL of water, by heating. Then, 1.6g (1.19 mmol) of the compound 1-1 was added to the solution, and themixture was stirred for one hour. A precipitate thus formed was obtainedby filtration and washed with water. The thus-obtained precipitate wasdried under reduced pressure, thereby obtaining the following compound2-1 in an amount of 3.4 g (yield 95%).

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1270 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (35.01%,        2.88%, 2.59%); theoretical values (34.29%, 2.91%, 2.64%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 19: Synthesis of Compound 2-2

The following compound 2-2 was obtained (yield 96%) in the same manneras Synthesis Example 18, except that the compound 1-2 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1326 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (35.28%,        3.15%, 2.63%); theoretical values (35.18%, 3.11%, 2.59%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 20: Synthesis of Compound 2-3

The following compound 2-3 was obtained (yield 95%) in the same manneras Synthesis Example 18, except that the compound 1-3 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1355 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (35.55%,        3.24%, 2.61%); theoretical values (35.61%, 3.20%, 2.57%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 21: Synthesis of Compound 2-4

The following compound 2-4 was obtained (yield 97%) in the same manneras Synthesis Example 18, except that the compound 1-4 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1078 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (30.20%,        3.14%, 2.86%); theoretical values (30.070, 3.10%, 2.81%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 22: Synthesis of Compound 2-5

The following compound 2-5 was obtained (yield 97%) in the same manneras Synthesis Example 18, except that the compound 1-5 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1106 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (30.63%,        3.18%, 2.75%); theoretical values (30.59%, 3.20%, 2.78%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 23: Synthesis of Compound 2-6

The following compound 2-6 was obtained (yield 96%) in the same manneras Synthesis Example 18, except that the compound 1-6 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1383 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (36.25%,        3.33%, 2.54%); theoretical values (36.04%, 3.30%, 2.55%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 24: Synthesis of Compound 2-7

The following compound 2-7 was obtained (yield 95%) in the same manneras Synthesis Example 18, except that the compound 1-7 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1383 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (36.25%,        3.33%, 2.54%); theoretical values (36.04%, 3.30%, 2.55%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 25: Synthesis of Compound 2-8

The following compound 2-8 was obtained (yield 97%) in the same manneras Synthesis Example 18, except that the compound 1-8 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1440 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (36.88%,        3.49%, 2.51%); theoretical values (36.87%, 3.48%, 2.50%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Synthesis Example 26: Synthesis of Compound 2-9

The following compound 2-9 was obtained (yield 97%) in the same manneras Synthesis Example 18, except that the compound 1-9 was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1352 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (34.88%,        3.79%, 2.58%); theoretical values (34.92%, 3.83%, 2.57%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Comparative Synthesis Example 2: Synthesis of Compound 2-X

The following compound 2-X was obtained (yield 97%) in the same manneras Synthesis Example 18, except that the compound 1-X was used in placeof the compound 1-1.

The compound thus obtained was confirmed to be a target compound fromthe following analysis results:

-   -   31P NMR (d-dmso, ppm) δ-15.15    -   MS (MALDI) (m/z): 1122 (M⁺), 2879 (MH₂ ⁻)    -   Elemental analysis values: CHN measurement values (29.04%,        2.90%, 2.81%); theoretical values (29.01%, 2.88%, 2.85%)    -   Fluorescent X-ray analysis: Mo/W measurement values (0%, 100%);        theoretical values (0%, 100%)

Preparation Example 1: Preparation of Salt-Type Block Polymer DispersantA Solution

In a reactor, 60.74 parts by mass of PGMEA and 35.64 parts by mass(effective solid content 21.38 parts by mass) of a block copolymercontaining tertiary amino groups (product name: BYK-LPN 6919,manufactured by: BYK-Chemie GmbH) (amine value 120 mgKOH/g, solidcontent 60% by weight) were dissolved. Then, 3.62 parts by mass (0.5molar equivalent with respect to the tertiary amino groups of the blockcopolymer) of PPA was added to the mixture. The mixture was stirred at40° C. for 30 minutes, thereby preparing a salt-type block polymerdispersant A solution (solid content 25%).

Preparation Example 2: Preparation of Binder Composition A (1) Synthesisof Binder Resin A)

First, 130 parts by mass of diethylene glycol ethyl methyl ether (EMDG),which is a solvent, was put in a reactor equipped with a cooling tube,an addition funnel, a nitrogen inlet, a mechanical stirrer and a digitalthermometer. After the temperature of the solvent was increased to 90°C. under a nitrogen atmosphere, a mixture of 32 parts by mass of methylmethacrylate, 22 parts by mass of cyclohexyl methacrylate, 24 parts bymass of methacrylic acid, 2.0 parts by mass of AIBN, which is aninitiator, and 4.5 parts by mass of n-dodecyl mercaptan, which is achain transfer agent, was continuously added to the solvent in adropwise manner for 1.5 hours.

Then, with maintaining the synthesis temperature, the reaction wascontinued. Two hours after the completion of the addition of the mixturein a dropwise manner, 0.05 part by mass of p-methoxyphenol, which is apolymerization inhibitor, was added thereto.

Next, with injecting air into the mixture, 22 parts by mass of glycidylmethacrylate was added to the mixture. After the temperature of themixture was increased to 110° C., 0.2 part by mass of triethylamine wasadded thereto, and an addition reaction was caused at 110° C. for 15hours in the mixture, thereby obtaining a binder resin A (solid content44% by mass).

The binder resin A thus obtained had a mass average molecular weight(Mw) of 8500, a number average molecular weight (Mn) of 4200, amolecular weight distribution (Mw/Mn) of 2.02, and an acid value of 85mgKOH/g.

(2) A binder composition A (solid content 40% by mass) was prepared bymixing the following: 19.82 parts by mass of PGMEA, 18.18 parts by massof the binder resin A (solid content 44% by mass), 8.00 parts by mass ofa pentafunctional and hexafunctional acrylate monomer (product name:ARONIX M403, manufactured by: TOAGOSEI Co., Ltd.), 3.00 parts by mass of2-methyl-1[4-(methylthio)phenyl]-2-morpholinopropane-1-one (productname: IRGACURE 907, manufactured by: BASF) and 1.00 part by mass of2,4-diethylthioxanthone (product name: KAYACURE DETX-S, manufactured by:Nippon Kayaku Co., Ltd.)

Preparation Example 3: Preparation of Phosphorus-Based Block Copolymer BSolution (1) Synthesis of Block Copolymer B

First, 100 parts by mass of dehydrated tetrahydrofuran and 3.00 parts bymass of dimethylketene methyl trimethylsilyl acetal were put in areactor equipped with a cooling tube, an addition funnel, a nitrogeninlet, a mechanical stirrer and a digital thermometer. Nitrogensubstitution was sufficiently carried out thereon. Next, 0.25 part bymass of a 1 M solution of tetrabutylammonium m-chlorobenzoate inacetonitrile, was injected into the reactor by a syringe. Then, a mixedsolution of 50.0 parts by mass of methyl methacrylate, 30.0 parts bymass of n-butyl methacrylate and 20.0 parts by mass of benzylmethacrylate was added in a dropwise manner for 60 minutes. The reactorwas cooled in an ice bath to keep the temperature at less than 40° C.After one hour passed, 25.0 parts by mass of glycidyl methacrylate wasadded in a dropwise manner for 20 minutes. After the mixture was reactedfor one hour, 1 part by mass of methanol was added to stop the reaction.To the thus-obtained solution of the block copolymer B in THF, 188.0parts by mass of PGMEA was added. Solvent substitution was carried outthereon by evaporation, thereby obtaining a solution of the blockcopolymer B in 40.0% by mass PGMEA.

The thus-obtained block copolymer B had a mass average molecular weight(Mw) of 9470, a number average molecular weight (Mn) of 7880, and amolecular weight distribution (Mw/Mn) of 1.20.

(2) Production of Phosphorus-Based Block Copolymer Solution

First, 100.0 parts by mass of the block copolymer B, 86.70 parts by massof PGMEA, and 8.90 parts by mass of phenylphosphonic acid (PPA) were putin a reactor and stirred for two hours at 90° C., thereby obtaining aphosphorus-based block copolymer B solution (solid content 25% by mass).The progress of an esterification reaction between the PPA and aglycidyl group (a constitutional unit derived from the glycidylmethacrylate of the block copolymer B) was confirmed by acid valuemeasurement and ¹H-NMR measurement. The thus-obtained phosphorus-basedblock copolymer B had an acid value of 65 mgKOH/g.

Preparation Example 4: Preparation of Binder Composition B (1) Synthesisof Phosphate Triester Compound A

First, 70 parts by mass of chloroform, 20.89 parts by mass ofhydroxyethyl acrylate and 12.14 parts by mass of triethylamine were putin a reactor equipped with a cooling tube, an addition funnel, anitrogen inlet, a mechanical stirrer and a digital thermometer. Withstirring the mixed solution under a nitrogen atmosphere, the solutiontemperature was cooled to about 5° C. by use of an ice bath. Then, asolution obtained by diluting 6.13 parts by mass of phosphoryl chloridewith 10 parts by mass of chloroform, was continuously added in adropwise manner for 15 minutes, while controlling the solutiontemperature so as not to exceed 30° C. After the dropwise addition wascompleted, the ice bath was taken out, and the solution was stirred forthree hours at room temperature. Then, 30 parts by mass of pure waterwas added thereto, and the mixed solution was stirred for 30 minutes.Then, the resulting reacted solution was taken out therefrom and washedthree times with saturated brine. An organic layer thus formed wasdehydrated with magnesium sulfate, filtered, and then mixed with 0.015 gof p-methoxyphenol. Then, the solvent was removed from the mixture,thereby obtaining 14.09 g (yield 90%) of a phosphate triester compound Arepresented by the following chemical formula (A). The thus-obtainedcompound had an acid value of 5 mgKOH/g. As a result of ³²P-NMRmeasurement, it was found that the main component of the compound wasphosphate triester; a slight amount of phosphoric diester was detected;and the peak integral ratio of the phosphate triester was 90% or more.

(2) Preparation of Binder Composition B)

A binder composition B (solid content 40% by mass) was prepared bymixing the following: 19.82 parts by mass of PGMEA, 18.18 parts by massof the binder resin A (solid content 44% by mass), 8.00 parts by mass ofthe phosphate triester compound A, 3.00 parts by mass of2-methyl-1[4-(methylthio)phenyl]-2-morpholinopropane-1-one (productname: IRGACURE 907, manufactured by: BASF) and 1.00 part by mass of2,4-diethylthioxanthone (product name: KAYACURE DETX-S, manufactured by:Nippon Kayaku Co., Ltd.)

Example 1: Preparation of Color Material Dispersion Liquid A and ColorResin Composition A

(1) First, 13.0 parts by mass of the color material 2-1 of SynthesisExample 18, 20.80 parts by mass (effective solid content 5.20 parts bymass) of the salt-type block polymer dispersant A solution prepared inPreparation Example 1, 11.82 parts by mass (effective solid content 5.20parts by mass) of the binder resin A of Preparation Example 2, and 54.38parts by mass of PGMEA were mixed. Using a paint shaker (manufactured byAsada Iron Works Co., Ltd.), the mixture was subjected to apre-dispersion for 1 hour with 2 mm zirconia beads and then a maindispersion for 6 hours with 0.1 mm zirconia beads, thereby obtaining acolor material dispersion liquid A.

(2) First, 28.57 parts by mass of the color material dispersion liquid Aobtained in the above (1), 28.29 parts by mass of the binder compositionA obtained in Preparation Example 2, 43.14 parts by mass of PGMEA, 0.04part by mass of surfactant R08MH (product name, manufactured by DIC) and0.4 part by mass of silane coupling agent KBM503 (product name,manufactured by Shin-Etsu Silicones) were mixed. The mixture thusobtained was subjected to pressure filtration, thereby obtaining a colorresin composition A.

Examples 2 to 9: Preparation of Color Material Dispersion Liquids B to Iand Color Resin Compositions B to I

Color material dispersion liquids B to I and color resin compositions Bto I were obtained in the same manner as Example 1, except that thecolor materials 2-2 to 2-9 were used in place of the color material 2-1.

Example 10: Preparation of Color Material Dispersion Liquid J and ColorResin Composition J

A color material dispersion liquid J and a color resin composition Jwere obtained in the same manner as Example 1, except that the colormaterial 2-3 and the phosphorus-based block copolymer B solution wereused in place the color material 2-1 and the salt-type block polymerdispersant A solution.

Example 11: Preparation of Color Resin Composition K

A color resin composition K was obtained in the same manner as Example1, except that the color material 2-3 and a binder resin composition Bwere used in place of the color material 2-1 and the binder compositionA.

Example 12: Preparation of Color Resin Composition L

A color resin composition L was obtained in the same manner as Example1, except that the color material 2-3, a phosphorus-based blockcopolymer A solution and the binder resin composition B were used inplace of the color material 2-1, the salt-type block polymer dispersantA solution and the binder composition A.

Comparative Example 1: Preparation of Color Material Dispersion Liquid Xand Color Resin Composition X

A color material dispersion liquid X and a color resin composition Xwere obtained in the same manner as Example 1, except that the colormaterial 2-X was used in place of the color material 2-1.

[Evaluation] <Optical Performance Evaluation and Heat ResistanceEvaluation>

Each of the color resin compositions obtained in Examples andComparative Examples was applied onto each of glass substrates with athickness of 0.7 mm (product name: OA-10G, manufactured by: NipponElectric Glass Co., Ltd.) using a spin coater, heat-dried on a hot plateat 80° C. for 3 minutes, irradiated with ultraviolet light at 40 mJ/cm²using an ultrahigh-pressure mercury lamp, and then post-baked in a cleanoven at 230° C. for 30 minutes, thereby obtaining a cured film (a bluecolor layer). The thickness of the film was controlled to have a targetchromaticity (y=0.082) after drying and curing. The chromaticity (x₀,y₀), luminance (Y₀) and L, a, b (L₀, a₀, b₀) of the obtained coloredsubstrate were measured by MICROSCOPIC SPECTROPHOTOMETER OSP-SP200(product name, manufactured by Olympus Corporation).

Next, the substrate on which the cured film was formed, was post-bakedin a clean oven at 230° C. for 30 minutes and then left to cool for 30minutes. This process was repeated three times, and the chromaticity(x₁, y₁), luminance (Y₁) and L, a, b (L₁, a₁, b₁) of the thus-obtainedcolored substrate were measured. From the values thus measured, colorchange (Δx) and color difference (ΔEab) before and after the treatmentwere calculated by the following formulae. The results are shown inTable 1.

Color change (Δx)=x ₁ −x ₀

Color difference (ΔEab)={(L ₁ −L ₀)²+(a ₁ −a ₀)²+(b ₁ −b ₀)²}^(1/2)

TABLE 1 Color Color Luminance change difference Color material (Y₁) (Δx)(ΔEab) Example 1 Compound 2-1 9.5 0.0007 10.9 Example 2 Compound 2-2 9.50.0005 8.6 Example 3 Compound 2-3 10.0 0.0005 4.4 Example 4 Compound 2-49.1 0.0020 8.2 Example 5 Compound 2-5 9.4 0.0020 6.5 Example 6 Compound2-6 10.5 0.0003 3.8 Example 7 Compound 2-7 9.6 0.0004 7.2 Example 8Compound 2-8 9.7 0.0004 6.8 Example 9 Compound 2-9 9.5 0.0008 7.5Example 10 Compound 2-3 10.3 0.0002 3.5 Example 11 Compound 2-3 10.20.0003 3.8 Example 12 Compound 2-3 10.4 0.0002 3.2 Comparative Compound2-X 8.6 0.0035 15.1 Example 1

[Evaluation] <Evaluation of Re-Solubility in Solvents>

Each of the color resin compositions obtained in Examples 10 and 12 wasapplied to a surface of each of glass substrates (100 mm×5 mm×0.7 mm) bydip coating. Each of the glass substrates was left under an environmentat a temperature of 23° C. and a humidity of 80% RH for 30 minutes todry the applied color resin composition, thereby forming dried coatingfilm. Each of the thus-obtained glass test pieces (the dried coatingfilms) was immersed in PGMEA, and the PGMEA was stirred for 15 secondsto re-dissolve the dried coating film. The re-dissolution state of thedried coating films was visually observed for evaluation of theirre-solubility in solvents, based on the following evaluation criteria.

As a result, the evaluation results of the color resin compositionsobtained in Examples 10 and 12 were both “A”.

(Criteria for Evaluation of Re-Solubility in Solvents)

A: The dried coating film was dissolved in the PGMEA solution, withoutleaving a flake.B: A flake of the dried coating film remained in the PGMEA solution, orthe dried coating film was not dissolved in the PGMEA solution.

<Solvent Resistance Evaluation>

For the color resin compositions obtained in Examples 11 and 12, thepost-baked color films obtained in the above-described opticalperformance evaluation and heat resistance evaluation, were immersed inNMP for 30 minutes. Then, the film surface was observed for evaluationof solvent resistance, based on the following evaluation criteria.

As a result, the evaluation results of the color resin compositionsobtained in Examples 11 and 12 were both “A”.

(Criteria for Evaluation of Solvent Resistance)

A: No change.B: The film surface peeled off.

<Adhesion Evaluation>

For the color resin composition obtained in Example 12, the post-bakedcolor film obtained in the above-described optical performanceevaluation and heat resistance evaluation, was subjected to a cross-cuttape test in accordance with JIS K5600 for evaluation of adhesion basedon the following evaluation criteria.

As a result, the evaluation result of the color resin compositionobtained in Example 12 was “A”.

(Criteria for Evaluation of Adhesion)

A: A cross-cut grid pattern remained.B: The film peeled off.

[Summary of Results]

From the results shown in Table 1, it was revealed that the color layersformed by use of the color resin compositions of Examples 1 to 9, eachcontaining, as the color material, the compound which is represented bythe general formula (I) and which contains any one of the followingstructures (i) and (ii), showed a small color change (Δx), a small colordifference (ΔEab) and, therefore, excellent heat resistance even afterthey were repeatedly post-baked.

(i) “A” is an aliphatic hydrocarbon group containing two or morealicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain

(ii) At least one of R², R³, R⁴ and R⁵ is a cycloalkyl group optionallycontaining a substituent group or an aryl group optionally containing asubstituent group.

It was also revealed that color layers high in luminance (Y₁) areobtained due to the excellent heat resistance.

The color layers formed by use of the color resin compositions ofExamples 10 to 12, satisfied at least one of the following conditions(1) and (2):

(1) The dispersant is a polymer containing at last one selected from aconstitutional unit represented by the general formula (VI) and aconstitutional unit represented by the general formula (VI′).

(2) The binder component contains a phosphorus atom-containingpolyfunctional monomer.

Therefore, it was revealed that color layers small in color change (Δx)and color difference (ΔEab) and high in luminance (Y₁) are obtained.

[Production of Color Filter] (1) Formation of Light Shielding Layer<Composition of Black Pigment Dispersion Liquid>

-   -   Black pigment: 23 parts by weight    -   Polymer dispersant (DISPERBYK 111 manufactured by BYK Japan KK):        2 parts by weight    -   Solvent (diethylene glycol dimethyl ether): 75 parts by weight

Next, the following components in the following amounts weresufficiently mixed to obtain a composition for light shielding layer.

<Composition for Light Shielding Layer>

-   -   The above-obtained black pigment dispersion liquid: 61 parts by        weight    -   Curable resin composition: 20 parts by weight    -   Diethylene glycol dimethyl ether: 30 parts by weight

Then, the composition for light shielding layer was applied on a glasssubstrate having a thickness of 0.7 mm (“AN100” manufactured by AsahiGlass Co., Ltd.) by a spin coater. The applied composition was dried at100° C. for three minutes to form a light shielding layer having athickness of about 1 μm. The light shielding layer was exposed in alight shielding pattern by an ultrahigh-pressure mercury lamp and thendeveloped in a 0.05 wt % potassium hydroxide aqueous solution. Next, thesubstrate was left under an atmosphere at 180° C. for 30 minutes forheating, thereby forming a light shielding layer in a region where thelight shielding layer was needed to be formed.

(2) Formation of Color Layer

A resin composition for red color layer was prepared in the same manneras Example 1, except that a red pigment (Pigment Red 254) was used inthe color resin composition, in place of the color material 2-1 ofSynthesis Example 18. A light shielding layer was formed on a substratein the above-described manner, and the resin composition for red colorlayer was applied onto the substrate so that the thickness of a film wascontrolled to have a target chromaticity (y=0.650) after drying andcuring. Then, the applied resin composition was dried on the hot plateat 80° C. for 3 minutes. Next, a thus-obtained coating film of the resincomposition for red color layer, was irradiated with ultraviolet lightat 40 mJ/cm² using the ultrahigh-pressure mercury lamp, through aphotomask. Then, the glass substrate on which the color layer wasformed, was subjected to shower development for one minute, using a0.05% by mass potassium hydroxide aqueous solution as an alkalinedeveloper. Then, the substrate was post-baked in a clean oven at 230° C.for 30 minutes, thereby forming a red color layer in a region where thered color layer was needed to be formed.

Next, a resin composition for green color layer was prepared in the samemanner as Example 1, except that a green pigment (Pigment Green 58) wasused in the color resin composition, in place of the color material 2-1of Synthesis Example 18. Using the resin composition for green colorlayer, a green color layer was formed in a region where a green pixelwas needed to be formed, by the same process as the red color layer sothat the thickness of a film was controlled to have a targetchromaticity (y=0.500) after drying and curing.

Also, using each of the color resin compositions of Examples 1, 2, 3 and5 and Comparative Example 1, a blue color layer was formed in a regionwhere a blue pixel was needed to be formed, by the same process as thered color layer so that the thickness of a film was controlled to have atarget chromaticity (y=0.082) after drying and curing. Therefore, thecolor layers in three colors of red (R), green (G) and blue (B) wereformed.

<Transmission Spectra of Color Filters>

The transmission spectra of the blue color layers obtained by use of thecolor resin compositions of Examples 1, 2, 3 and 5 and ComparativeExample 1, were measured by “MICROSCOPIC SPECTROPHOTOMETER OSP-SP200”manufactured by Olympus Corporation.

FIGS. 5 to 9 show the transmission spectra of the blue color layersobtained by use of the color resin compositions of Examples 1, 2, 3 and5 and Comparative Example 1. The spectra before and after thepost-baking for 30 minutes in the clean oven at 230° C., are referred toas “Before heating” and “After heating”, respectively.

[Summary of Results]

Each of the blue color layers obtained by use of the color resincompositions of Examples 1 to 3 and 5 shown in FIGS. 5 to 8, was formedby use of, as the color material, the color resin composition containingthe compound which is represented by the general formula (I) and whichcontains one or more structures selected from the following structures(i) and (ii): (i) “A” is an aliphatic hydrocarbon group containing twoor more alicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain, and (ii) at least oneof R², R³, R⁴ and R⁵ is a cycloalkyl group optionally containing asubstituent group or an aryl group optionally containing a substituentgroup. Therefore, the spectra of the blue color layers show a smallcolor change after heating, and the peak top positions of theirtransmission spectra are less likely to change. The color material inwhich (ii) at least one of R², R³, R⁴ and R⁵ is a cycloalkyl groupoptionally containing a substituent group or an aryl group optionallycontaining a substituent group, is particularly preferred because, inthe case of using the color material, the peak top position of thetransmission spectrum is far less likely to change.

REFERENCE SIGNS LIST

-   1. Transparent substrate-   2. Light shielding part-   3. Color layer-   10. Color filter-   13 a, 13 b. Orientation film-   15. Liquid crystal layer-   20. Counter substrate-   25 a, 25 b. Polarization plate-   30. Backlight-   40. Liquid crystal display device-   50. Organic protection layer-   60. Inorganic oxide layer-   71. Transparent positive electrode-   72. Positive hole injection layer-   73. Positive hole transport layer-   74. Light-emitting layer-   75. Electron injection layer-   76. Negative electrode-   80. Light-emitting body-   100. Light-emitting display device-   201. Divalent or higher counter cation-   202. Divalent or higher counter anion-   203. Linking by A-   204. Ionic bond-   210. Molecular association of the compound represented by the    general formula (I)

1.-12. (canceled)
 13. A color material dispersion liquid comprising (A)a color material, (B) a dispersant and (C) a solvent, wherein the colormaterial (A) contains a compound which is represented by the followinggeneral formula (I) and which contains a structure represented by thefollowing (i): (i) “A” is an aliphatic hydrocarbon group containing twoor more alicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain

where “A” is an “a”-valent organic group in which a carbon atom directlybound to “N” contains no π bond, and the organic group is an aliphatichydrocarbon group containing a saturated aliphatic hydrocarbon group atleast at a terminal position directly bound to “N” and optionallycontaining O, S, N in a carbon chain; each of R¹, R², R³, R⁴ and R⁵ isindependently a hydrogen atom, an alkyl group optionally containing asubstituent group, or an aryl group optionally containing a substituentgroup; each of R⁶ and R⁷ is independently an alkyl group optionallycontaining a substituent group or an alkoxy group optionally containinga substituent group; Ar¹ is a divalent aromatic group optionallycontaining a substituent group; B^(c−) is a “c”-valent anion; each of“a” and “c” is an integer of 2 or more; each of “b” and “d” is aninteger of 1 or more; “e” is 0 or 1; each of “f” and “g” is an integerof from 0 to 4; each of “f+e” and “g+e” is from 0 to 4; R¹s may be thesame or different; R²s may be the same or different; R³s may be the sameor different; R⁴s may be the same or different; R⁵s may be the same ordifferent; R⁶s may be the same or different; R⁷s may be the same ordifferent; Ar¹s may be the same or different; “e”s may be the same ordifferent; “f”s may be the same or different; and “g”s may be the sameor different.
 14. The color material dispersion liquid according toclaim 13, wherein the compound represented by the general formula (I)further contains a structure represented by the following (ii): (ii) atleast one of R², R³, R⁴ and R⁵ is a cycloalkyl group optionallycontaining a substituent group or an aryl group optionally containing asubstituent group.
 15. The color material dispersion liquid according toclaim 14, wherein, for the compound represented by the general formula(I), at least one of R², R³, R⁴ and R⁵ is a substituent grouprepresented by the following formula (II) or (III):

where each of R¹¹, R¹² and R¹³ is independently a hydrogen atom, analkyl group containing 1 to 4 carbon atoms and optionally containing asubstituent group, or an alkoxy group containing 1 to 4 carbon atoms andoptionally containing a substituent group,

where each of R¹⁴, R¹⁵ and R¹⁶ is independently a hydrogen atom, analkyl group containing 1 to 4 carbon atoms and optionally containing asubstituent group, or an alkoxy group containing 1 to 4 carbon atoms andoptionally containing a substituent group.
 16. The color materialdispersion liquid according to claim 13, wherein, for the compoundrepresented by the general formula (I), “A” is a substituent grouprepresented by the following general formula (IV):

where R²¹ is an alkylene group containing 1 to 3 carbon atoms andoptionally containing, as a substituent group, an alkyl group containing1 to 4 carbon atoms or an alkoxy group containing 1 to 4 carbon atoms;each of R²² and R²³ is independently an alkyl group containing 1 to 4carbon atoms or an alkoxy group containing 1 to 4 carbon atoms; “p” isan integer of from 1 to 3; each of “q” and “r” is independently aninteger of from 0 to 4; when two or more R²¹s are present, they may bethe same or different; when two or more R²²s are present, they may bethe same or different; when two or more R²³s are present, they may bethe same or different; and when two or more “r”s are present, they maybe the same or different.
 17. The color material dispersion liquidaccording to claim 13, wherein, for the compound represented by thegeneral formula (I), the anion represented by B^(c−) is aheteropolyoxometalate containing one or more elements selected fromtungsten and molybdenum.
 18. The color material dispersion liquidaccording to claim 13, wherein the dispersant contains a graft copolymercontaining a constitutional unit represented by the following generalformula (VII) and at last one selected from a constitutional unitrepresented by the following general formula (VI) and a constitutionalunit represented by the following general formula (VI′), or a blockcopolymer containing a block moiety that contains a constitutional unitrepresented by the following general formula (VIII) and a block moietythat contains at least one selected from a constitutional unitrepresented by the following general formula (VI) and a constitutionalunit represented by the following general formula (VI′):

where L⁴¹ is a direct bond or a divalent linking group; R⁴¹ is ahydrogen atom or a methyl group; R⁴² is a hydrocarbon group or amonovalent group represented by —[CH(R⁴⁶)—CH(R⁴⁷)—O]_(x1)—R⁴⁸ or—[(CH₂)_(y1)—O]_(z1)—R⁴⁸; each of R⁴⁶ and R⁴⁷ is independently ahydrogen atom or a methyl group; R⁴⁸ is a hydrogen atom, a hydrocarbongroup, or a monovalent group represented by —CHO, —CH₂CHO, —CO—CH═CH₂,—CO—C(CH₃)═CH₂, or —CH₂COOR⁴⁹; R⁴⁹ is a hydrogen atom or an alkyl grouphaving 1 to 5 carbon atoms; the hydrocarbon group optionally contains asubstituent group; x1 is an integer of from 1 to 18; y1 is an integer offrom 1 to 5; and z1 is an integer of from 1 to 18; where X⁺is an organiccation; where L⁴² is a direct bond or a divalent linking group; R⁴³ is ahydrogen atom or a methyl group; and “Polymer” is a polymer chaincontaining one or more selected from a constitutional unit representedby the following general formula (IX) and a constitutional unitrepresented by the following general formula (X); and where R⁴⁴ is ahydrogen atom or a methyl group; R⁴⁵ is a hydrocarbon group or amonovalent group represented by —[CH(R⁵⁰)—CH(R⁵¹)—O]_(x2)—R⁵²,—[(CH₂)_(y2)—O]_(z2)—R⁵², —[CO—(CH₂)_(y2)—O]_(z2)—R⁵², —CO—O—R^(52′) or—O—CO—R^(52″); each of R⁵⁰ and R⁵¹ is independently a hydrogen atom or amethyl group; R⁵² is a hydrogen atom, a hydrocarbon group, or amonovalent group represented by —CHO, —CH₂CHO or —CH₂COOR⁵³; R^(52′) isa hydrocarbon group or a monovalent group represented by—[CH(R⁵⁰)—CH(R⁵¹)—O]_(x2′)—R⁵², —[(CH₂)_(y2′)—O]_(z2′)—R⁵², or—[CO—(CH₂)_(y2′)—O]_(z2′)—R⁵²; R⁵² is an alkyl group having 1 to 18carbon atoms; R⁵³ is a hydrogen atom or an alkyl group having 1 to 5carbon atoms; the hydrocarbon group optionally contains a substituentgroup; each of x2 and x2′ is independently an integer of from 1 to 18;each of y2 and y2′ is independently an integer of from 1 to 5; and eachof z2 and z2′ is an integer of from 1 to 18:

where R⁵⁴ is a hydrogen atom or a methyl group; R⁵⁵ is a hydrocarbongroup or a monovalent group represented by—[CH(R⁵⁶)—CH(R⁵⁷)—O]_(x3)—R⁵⁸, —[(CH₂)_(y3)—O]_(z3)—R⁵⁸,—[CO—(CH₂)_(y3)—O]_(z3)—R⁵⁸, —CO—O—R⁵⁹, or —O—CO—R⁶⁰; each of R⁵⁶ andR⁵⁷ is a hydrogen atom or a methyl group; R⁵⁸ is a hydrogen atom, ahydrocarbon group, or a monovalent group represented by —CHO, —CH₂CHO or—CH₂COOR⁶¹; R⁵⁹ is a hydrocarbon group or a monovalent group representedby —[CH(R⁵⁶)—CH(R⁵⁷)—O]_(x4)—R⁵⁸, —[(CH₂)_(y4)—O]_(z4)—R⁵⁸ or—[CO—(CH₂)_(y4)—O]_(z4)—R⁵⁸; R⁶⁰ is an alkyl group having 1 to 18 carbonatoms; R⁶¹ is a hydrogen atom or an alkyl group having 1 to 5 carbonatoms; the hydrocarbon group optionally contains a substituent group;“m” is an integer of from 1 to 5; “n” and “n′” are each an integer offrom 5 to 200; each of x3 and x4 is independently an integer of from 1to 18; each of y3 and y4 is independently an integer of from 1 to 5; andeach of z3 and z4 is independently an integer of from 1 to
 18. 19. Acolor resin composition comprising (A) a color material, (B) adispersant, (C) a solvent and (D) a binder component, wherein the colormaterial (A) contains a compound which is represented by the followinggeneral formula (I) and which contains a structure represented by thefollowing (i): (i) “A” is an aliphatic hydrocarbon group containing twoor more alicyclic hydrocarbon groups, containing a saturated aliphatichydrocarbon group at a terminal position directly bound to “N”, andoptionally containing O, S, N in a carbon chain

where “A” is an “a”-valent organic group in which a carbon atom directlybound to “N” contains no π bond, and the organic group is an aliphatichydrocarbon group containing a saturated aliphatic hydrocarbon group atleast at a terminal position directly bound to “N” and optionallycontaining O, S, N in a carbon chain; each of R¹, R², R³, R⁴ and R⁵ isindependently a hydrogen atom, an alkyl group optionally containing asubstituent group, or an aryl group optionally containing a substituentgroup; each of R⁶ and R⁷ is independently an alkyl group optionallycontaining a substituent group or an alkoxy group optionally containinga substituent group; Ar¹ is a divalent aromatic group optionallycontaining a substituent group; B^(c−) is a “c”-valent anion; each of“a” and “c” is an integer of 2 or more; each of “b” and “d” is aninteger of 1 or more; “e” is 0 or 1; each of “f” and “g” is an integerof from 0 to 4; each of “f+e” and “g+e” is from 0 to 4; R¹s may be thesame or different; R²s may be the same or different; R³s may be the sameor different; R⁴s may be the same or different; R⁵s may be the same ordifferent; R⁶s may be the same or different; R⁷s may be the same ordifferent; Ar¹s may be the same or different; “e”s may be the same ordifferent; “f”s may be the same or different; and “g”s may be the sameor different.
 20. The color resin composition according to claim 19,wherein the compound represented by the general formula (I) furthercontains a structure represented by the following (ii): (ii) at leastone of R², R³, R⁴ and R⁵ is a cycloalkyl group optionally containing asubstituent group or an aryl group optionally containing a substituentgroup.
 21. The color resin composition according to claim 19, wherein adifference Δx (=x₁−x₀) between a chromaticity coordinate x₀ of a curedfilm ₍₀₎ obtained by drying the color resin composition and heating thedried color resin composition at 230° C. for 30 minutes to a thicknessat which a chromaticity coordinate y₀ is 0.082, and a chromaticitycoordinate x₁ of a cured film ₍₁₎ obtained by repeating, three times, aprocess of heating the cured film ₍₀₎ at 230° C. for 30 minutes and thenleaving the heated cured film ₍₀₎ to cool for 30 minutes, is 0.025 orless.
 22. The color resin composition according to claim 19, wherein thebinder component (D) contains a phosphorus atom-containingpolyfunctional monomer.
 23. A color filter comprising at least atransparent substrate and color layers disposed on the substrate,wherein at least one of the color layers contains a compound which isrepresented by the following general formula (I) and which contains astructure represented by the following (i): (i) “A” is an aliphatichydrocarbon group containing two or more alicyclic hydrocarbon groups,containing a saturated aliphatic hydrocarbon group at a terminalposition directly bound to “N”, and optionally containing O, S, N in acarbon chain

where “A” is an “a”-valent organic group in which a carbon atom directlybound to “N” contains no π bond, and the organic group is an aliphatichydrocarbon group containing a saturated aliphatic hydrocarbon group atleast at a terminal position directly bound to “N” and optionallycontaining O, S, N in a carbon chain; each of R¹, R², R³, R⁴ and R⁵ isindependently a hydrogen atom, an alkyl group optionally containing asubstituent group, or an aryl group optionally containing a substituentgroup; each of R⁶ and R⁷ is independently an alkyl group optionallycontaining a substituent group or an alkoxy group optionally containinga substituent group; Ar¹ is a divalent aromatic group optionallycontaining a substituent group; B^(c−) is a “c”-valent anion; each of“a” and “c” is an integer of 2 or more; each of “b” and “d” is aninteger of 1 or more; “e” is 0 or 1; each of “f” and “g” is an integerof from 0 to 4; each of “f+e” and “g+e” is from 0 to 4; R¹s may be thesame or different; R²s may be the same or different; R³s may be the sameor different; R⁴s may be the same or different; R⁵s may be the same ordifferent; R⁶s may be the same or different; R⁷s may be the same ordifferent; Ar¹s may be the same or different; “e”s may be the same ordifferent; “f”s may be the same or different; and “g”s may be the sameor different.
 24. The color filter according to claim 23, wherein thecompound represented by the general formula (I) further contains astructure represented by the following (ii): (ii) at least one of R²,R³, R⁴ and R⁵ is a cycloalkyl group optionally containing a substituentgroup or an aryl group optionally containing a substituent group. 25.The color filter according to claim 23, wherein, for a visible lighttransmission spectrum of the color layer containing the compound whichis represented by the general formula (I) and which contains thestructure represented by the (i), a maximum transmittance at 400 nm ormore and 500 nm or less is 86% or more; a minimum transmittance at 550nm or more and 650 nm or less is 2% or less; and a wavelength indicatingthe maximum transmittance at 400 nm or more and 500 nm or less, is in arange of from 425 nm to 455 nm.
 26. A liquid crystal display devicecomprising the color filter defined by claim 23, a counter substrate,and a liquid crystal layer disposed between the color filter and thecounter substrate.
 27. A light-emitting display device comprising thecolor filter defined by claim 23 and a light-emitting body.